I was going to say the same. I love the work TI is doing with the Pandaboard (they opensourced all they could, they're collaborating with the community, using a modern stack, expanding the closed source components to support Wayland, etc.) but the moment they stop development it's over, the pvr binary works with specific X and kernel releases and we'll be stuck with those forever.
In this case, the driver exposes some level of OpenGL/GLES, and all the rest can be built on that; if there are bugs or if some new extension is required there's nothing to do, but it seems to me that this is a lot more than what's possible with other SoCs. At least that's what I understood, please correct me if I'm wrong.
PS. robclark, if you're TI's robclark, I'm a fan! fan of glisse too, I've been using a r300 card for years.