LEGO have made it clear for some time that the final version of ROBOLAB would be v2.9, but ROBOLAB junkies such as myself can take heart that there has been at least some work on it since the last release.
I have recently heard that Tufts will have a v2.9.3 upgrade patch available for free download from LEGO Engineering (http://www.legoengineering.com/) in early February. Apparently the patch will not only fix some bugs but also add new features.
I have no idea what those new features will be. Here's hoping for more of something that rhymes with 'new booth'... (-: