I went by and picked up DVDs of Windows Vista x86 and x64 for my machines yesterday and am excited to install the final bits.

Note that the team also published an online security guide yesterday, which I highly recommend if you are managing machines in an network.

Along those lines, I also want to tip you to this site,  http://www.microsoft.com/security/windowsvista/default.mspx, which consolidates a lot of security information related to Windows Vista.