There are three major revisions of Mali GPUs: Utgard (-4), Midgard (-T) and Bifrost (-G*). There were 2 reverse engineering efforts. Lima (Utgard) and Panfrost

There are three major revisions of Mali GPUs: Utgard (-4), Midgard (-T) and Bifrost (-G*). There were 2 reverse engineering efforts. Lima (Utgard) and Panfrost project (Midgard and Bitfrost). Both were included in Mesa 19.1. And the "long term" is not about "every pinebook will have a reverse-engineered GPU in the future", but : "if you buy these GPU, you know every compilers you write that makes special uses of the specific GPU capabilities will never need you to install the new proprietary CUDA driver to continue your optimization, no blob in this part..." Also : You can run Linux-libre, thus riding the FSF train (GuixSD) and stop caring about not-free hardware.