Exchange 12 will be 64-bit only!
Wow - x64 is becoming more and more important. Check this out:
E12 will be exclusive to 64 Bit
As announced at ITForum today, you can read the press release regarding 64 Bit here:
http://www.microsoft.com/presspass/press/2005/nov05/11-15ITForum05UmbrellaPR.mspx
posted on Tuesday, November 15, 2005 12:10 PM by mfugatt
This is from http://blogs.technet.com/mfugatt/archive/2005/11/15/414509.aspx, which is a reliable source. Also see Bink at http://bink.nu/Article5344.bink.
This means that you have no excuse to not buy x64 at this point.