There's a short news article in Nature this week - but it's free to read, so please reward their generosity by having a look. The author presumably went over to Hawaii to cover the big CMIP5 workshop that we briefly popped in to. However, the first quote goes to Gavin who steers things neatly in the direction of his workshop that was held the previous week. And Masa Kageyama gets her say too. Poor Jerry Meehl and Karl Taylor are relegated to relative afterthoughts at the bottom of the page. Yes, there is a petabyte of data to look at, and several colleagues are tearing their hair out trying to access it. Apparently the system will be all peachy in a few more months, by which time they will have got it already :-)
To be fair, IMO probably the most exciting thing about the CMIP5 experiments has been the official inclusion of paleoclimate simulations - these have been done before of course, but only as a separate and rather lower-key project. Though this opinion is obviously not shared by many of the modelling groups who haven't actually done the paleo simulations in time for the IPCC report deadlines.