You are not alone. I also haven’t got an upgrade email yet. 
Hey guys…
I got my update link today after submitting a ticket to support. Go to the support page and do as i did. I picture pixo head quarters as being a frantic and overwhelmed place but they are answering tickets and trying to sort things out.
I did have…and still have installation issues but im getting there. I understand that vista could be the biggest fly in the ointment along with some issues pixo are sorting out. Its such a pain but worth it though I cant actually use 3.5 in my workflow yet until the plug ins get tweaked and re released by pixologic.
Happy zbrushing…
Not including future z4 in this statement, but…
Installed Z3.5 no problem.
Cost me nothing…great.
Thank you.
Did not install with image plane, zlink, the sketcher etc.
Because of possible conflicts will not install.
However.
Ain’t running to uninstall the old one.
FOR ME…Z3.5 without the old plugins isn’t worth it, at this time…
I couldn’t agree more. I really like the speed and the seeming stability improvements (only time will tell on the stability score,) and the interface enhancements are quite nice, but as a tool in my current project it just isn’t all that useful until the painting workflow, posing workflow, etc… has been brought back up to speed with the plugins.
I am slowly figuring out how to manually do some stuff that I was spoiled by with plugins in 3.1 and I actually figured out a workflow to sculpt in 3.5 and then get the information back into 3.1 with the subdivision levels intact so it’s nice to know I can use the new brushes or tools like the noise feature if I need them in the current project, but I am still doing most of my work in 3.1.
Still waiting here too. I submitted a ticket and got a response that they are looking in to it.
I got an email with a link to download 3.5 - however, I am on a Mac and have no intention of transferring my license to a PC version again (I transfered back to the mac with 3.1/2 well over a year ago).
Are other mac users getting this email too? I assume I should just ignore it and wait till it’s the Mac’s turn…
what Im hearing, its going to be incredible!! 
F.
Make shure you have checked all your emails. Its easy for it to be hidden if you have subscribed to a few threads on this forum. I was expecting a email from Cleverbridge, but it showed in my email as Pixologic.
I checked all emails, nothing, I submitted a ticket at Support Centre, no reply but I can see that the status is now “escalated”. A formula that says nothing if I ever saw one.
I was escalated last week.
Lots of water and a diet high in fiber should work.
Cheers, a bit of humour helps.
A couple of minutes ago I got a reply into my account, after submitting a ticket. The whole process of downloading, installing and activating ZBrush was a matter of just few minutes, really smooth 
Time for a deep breath and dive in
Mr. Natural, i had the same E-Mail, though i own the MacVersion …
I got my upgrade information but I had to fill out a ticket and then go back and check the ticket to see if they answered it. I think they may be using my email address I had when I bought ZB back when it was version 1.2. I don’t if there is a way for me to get that changed to my current email? I have corrected all my email address I use with ZB but I think they still use the original one to generate the license number.
@Mr. Natural and Ai02
That’s funny, I had my license switched to a PC version a long time ago, but when I submitted a trouble ticket they said I still have a Mac License. Still waiting to hear back from support. I am on a Mac but have always used Boot Camp for ZBrush. 
small_orange_diamond
Oh yes I got it
– Many Thanks to Pixologic.
A NOTE FOR MACINTOSH USERS:
Mac users - who received temporary Windows license while waiting for ZBrush 3 to be released for the Macintosh - may receive an upgrade link for ZBrush 3.5 Windows. If you are a Mac user who has not purchased a Windows ZBrush license, do not use the upgrade link that was emailed to you. Doing so will prevent you from being able to upgrade your Mac license when ZBrush 3.5 is released for the Macintosh.
If the previous paragraph applies to you, please submit a ticket at http://support.pixologic.com so that we can clear the Windows license off your account and re-activate your Mac license. Do this whether or not you have redeemed the upgrade.
Can you please give a forecast for us PC users that haven’t got it yet?
Hey guys,
Well several people want to know how to do this and thankfully its a pretty easy setup. I am using dual boot with 2 hard drives in slide trays. I avoid having Windows and Linux on the same hard drive because the 2 OSes will fight with each other for instance Linux will balance windows Inodes on start up and shutdown if you have both OSes on the same hard drive through a series of checks and balances and Windows does not do this so it can cause side effects in Windows. I installed the ZB3.5 in windows and did the web activation and got it fully working in windows first. I am using Windows XP 64 bit.
Then I rebooted into Ubuntu 9.04 64 bit Linux. I mounted my Windows hard drive by going to the Places menu and selecting the hard drive for windows. You must have wine already install if you do not simply go get wine with the Applications->Add/Remove. We need to run the terminal I can not get it to work by clicking it graphically for some reason but it seems to love the terminal so that works for me. Go to Applications->Accessories->Terminal and now type cd /media and hit enter. Your windows disk is mounted here.
You can see what is in the directory by typing ls. A cool trick to learning the Linux shell commands quickly is the fact that they are normally the first letter of multiple words or every other letter if its a single word. For instance cd is change director and ls is list. If the directory you are trying to go to has multiple words in it like Program Files you must put that directory in “” when you cd into that directory. Example cd “Program Files” Keep using cd until you reach the ZBrush.exe for ZBrush3.5. Once you do you can then type wine ZBrush.exe and it will run.
To make this easier so that you don’t have to type all of this each time you want to run ZB3.5 in Linux through wine type the command pwd in the terminal when you have changed directory to where the ZBrush.exe resides for ZBrush 3.5. This will give you your whole directory. Now run Applications->Accessories->Text Editor and put the following shell commands into the text editor. Make sure you put your directory that you got from the pwd command after the cd instead of mine in this script and put quotes around it.
#!/bin/bash
Your cd then the pwd directory from above in quotes below is my directory to my windows mounted hard drive.
cd “/media/disk/Program Files/Pixologic/ZBrush 3.5”
wine ZBrush.exe
Now save this as say ZBrush3.5.sh into your home directory. Now go to Places->Home Folder. In the Terminal type cd $HOME and this will bring you back to your home directory. Type ls to see what is in your home directory you should now see the ZBrush3.5.sh script that we just created. Now type chmod 0770 ZBrush3.5.sh This command sets the permissions for the file for the user group and everyone giving the user read write and execute permissions, the group read write and execute permissions, and everyone else no permissions. Now your script is executeable. Now in your Home Directory window left click drag the ZBrush3.5.sh shell script and then hold down Alt key also drop it on your desktop. A pop up box will come up asking you what you want to do at this point select link. For those that are familar with shell script you can use the ln command if you wish of course. I just think it is easier to drag and drop the file.
Now running ZB3.5 is easy for now on all you have to do is go to Places and then select your windows hard drive to mount it. Then double click your link to your ZBrush3.5.sh shell script on your desktop and an option box will popup and you select Run In Terminal and ZBrush 3.5 will launch. Also if you like you can right click on your ZBrush3.5.sh link on your desktop and select properties and assign you own cool looking logo image for ZBrush by clicking on the icon image on the left hand side in the window and then selecting an image of your choice. Below attached is an image with ZBrush 3.5 running on my Ubuntu 9.04 64 bit. 
Image was here was replaced with license info edited out thanks
[[attach=158224]ZB3.5_Linux.jpg[/attach]]
Happy ZBrushing Cheers,
Nate Nesler
Attachments
Pfffff… that’s a story. It looks like you took an airplane to somewhere in the middle of nowhere, Ubuntu… then went on a moutain and started a linux…
Pff, I am a stupid mac-user 
Just a joke
MatrixNAN
thank you very much,so I need install 3.5 on windows first,this is must?We can’t directness install zbrush in linux system,then use wine running？The use of wine will not reduce system speed？
And,MatrixNaN,maybe your snapshot lose your license info,delete it please.