Most important part IMO: "This branch is the full release of what I had done of InstantX"
... yeah, but if you continue reading it says ... "but with InstantX disabled."
Yes, enabled or disabled though this is very good progress. I think many were getting worried that instantx would go to the back burner again until conclusion of the darksend fix.
And, if this version gets pushed to mainnet with instantX disabled it would be open source which is great, better to get that code scrutinized early