well, thats just what comes from nvidia themselves who know how to make it work its best.
We will be updating to physx 3.0 after the main release as we dont think its that important an upgrade just to disable gravity on a few actors lol
What we have in engine is what we will be releasing with, then we can start improving and taking skyline to the next stage afterwards. For our own sanity, we need to conclude this rendering upgrade and get a main public version back out to everyone and leave the beta tag behind.
Physics are the most essential part about 3D gameplay.
They are, but we have managed to do most physics things already if not for a little extra work. Also adding physx 3.0 doesnt mean we intantly have constraints and the rest, as we can already add them.. but its time that is missing to do these features