This reminds me that MS will support IE on Server 2003 until July 2015, and IE on Server 2008 (both R1 and R2) until January 2020. Yes, both R1 (based on Vista/NT 6.0) and R2 (based on Win7/NT 6.1), because R2 is considered a "minor release" while Win7 is considered a major release.
Since they're not activated it's 30 or 90 days, I think. But you can just revert any VM changes upon shutdown and thus extend lifetime indefinitely (makes working in some environments quite a hassle, though – e.g. I'd have to re-setup the proxy every time I start the VM).
What I'd like is MS to make Server 2003 images, rather than XP, for IE8. And 2008, rather than 7, for IE9 and IE10.