The feedback and response to MSBuild Explorer has been great. My only regret is that v2 has not been released yet. The simple reason for this is lack of time and higher priorities.
I’m still committed to shipping a v2 beta in the short term (Q2 2011) with a stable version available by 1st July. I actually plan on shipping a few betas and private builds. If you would like to be involved in the testing of this release, please send an email to: feedback [at] msbuildexplorer.com