[gchadwick]

My understanding of the matter is the Apple GPU has had much of it developed in house for quite a while anyway (both on the SW and HW side). The only reason they didn't let go of Imagination earlier was presumably because they relied too much on their IP and patents.

Now I guess Apple have judged they no longer need Imagination and patents or more likely they are able to navigate the legal consequences successfully and the likely fines are less than the savings made (or worth it for the control Apple gains).

This announcement has been a long time coming and isn't particularly surprising.