The downside of having a blog and SQLTeam.com is that I feel like I have to post some things in both places. And this is one of those things. The Developer Edition of SQL Server 2005 is "available" on MSDN. MSDN is swamped so good luck getting the download started. There are also a few editions of Visual Studio 2005 available for download.
I'll be working a booth at the SQL Server 2005 launch event in Kansas City. This is an all day event with developer topics in the morning and DBA topics in the afternoon.