Just got this today in my MS action pack, gonna install it soon and see what its like. I also got:
Server 2008 enterprise 32 and 64 bit beta 3
System Centre Essentials 2007
Office Live Communications Server 2005 Enterprise Edition
Server 2003 R2 32 and 64bit
Its not exactly free, its £200 per year +VAT. But you get about 20k worth of software and tons of licence keys etc. I got it from MS and its totally legit. This is just a quarterly update that i got today, you get loads more stuff in there. You need to be a MS partner aswell.