Folks, if you are looking for a non .img file download for the CTP3 bits that we made public at TechEd, go here:

http://download.microsoft.com/download/5/d/a/5daf1dba-13f4-450a-9005-8001bb638965/TE_Data_CTP3.exe
http://download.microsoft.com/download/5/d/a/5daf1dba-13f4-450a-9005-8001bb638965/VSTE_Data_CTP3_pdi.exe

The second file is a new PDI file (this is already included in the zip file) that you can use if you already installed from the CD image.  This will remove the problems people have had with repair/reinstall issues.