This is a brief response tohttp://word-puzzle.blogspot.com/2011/03/what-next-for-microsoft-ironruby.html
which seems to put quite a dampner on the IronRuby status.
I can't deny that IronRuby's not in the vibrant state yet of it's JRuby counterpart - the number of contributors is much lower.
However, now that IronRuby and IronPython are integrated within Mono, and now release 1.1.2 is out there in the wild, things are very much looking positive
Real projects are being built - and there are as diverse as website using Rails, mobile apps like iron7, and lots of sysops and devops scripts using Rake.
I'm very much positive that IronRuby will continue to build forwards.