Emil Velikov of Collabora continues as the Mesa release manager. Emil issued the 11.2 RC1 announcement a few minutes ago.
The plan is to issue weekly release candidates until hopefully issuing Mesa 11.2.0 final on 11 March. The very basic 11.2 RC1 release announcement can be found via the Mesa-dev list.
We've already been writing a lot about -- and benchmarking -- Mesa 11.2 while more coverage and a feature recap will come as the March release nears. Sadly not making it for Mesa 11.2 is OpenGL 4.x compliance for the Intel i915 driver (still at OpenGL 3.3 but only a few extensions away from GL 4.2) and the Radeon/Nouveau drivers remain at OpenGL 4.1 but close to GL 4.2 compliance. The LLVMpipe software driver is also still in an OpenGL 3.3 world with not much activity on GL4 support. Hopefully the drivers will reach OpenGL 4.2 compliance this summer if not OpenGL 4.3.