Collabora is involved in many of the open-source upstream Linux graphics development from the work on the Intel Mesa shader cache to employing the current Mesa release manager to advancing Wayland and Weston.
Some of the work outlined by Daniel includes extending buffer modifier support, atomic Weston support, improvements for code re-use within Weston, Android fences to mainline Linux, joining the Khronos OpenXR VR workgroup, and more.
Collabora also recently hired Elie Tournier who was the developer that last year began writing the "soft" FP64 support. At Collabora he will be working on bringing transparent double-precision FP64 support to upstream Mesa. This will be exciting to many of you running older GPUs, especially those on the R600g driver, with eventually being able to have this soft FP64 support and thus OpenGL 4.
More details on Collabora's latest open-source graphics work via this blog post.