Latest AUM is 118 from december 2016, you can get it on the forum or read online here:
http://www.coniserver.net/coni_users/web_users/pirvu/aum/aumonline_e/Latest gamestudio update is 8.47 from March 2016. I don't think we will see more engine updates in the future, at least not for releasing new features, just maybe bugfixes. Gamestudio development is almost dead and all the company efforts go to develop Zorro.