Those of you bleeding-edgers who are using the Mesa 3D Graphics Library from Git, a.k.a. the development (unstable) branch of the graphics stack used in numerous GNU/Linux distributions to provide various open-source drivers for Intel, AMD, and Nvidia graphics cards, should have already noticed the major change. Mesa 13.1.0 is now known as Mesa 17.0.0 if you pull the latest code from Git, which the Padoka and Oibaf PPA do for Ubuntu 16.04 LTS (Xenial Xerus) and Ubuntu 16.10 (Yakkety Yak) platforms. It appears that the Mesa people decided to change the versioning scheme at the beginning of a new year, so now being 2017, here comes Mesa 17.0.0.