Speed cap is still the same.
I haven't been able to test a modded speed cap yet because the game runs very badly on the pc that I play it on (the pc has a good gfx card but a terrible cpu).
I've read their huge blog post about the update, and it does look like the game should handle high-speeds much better now (better collision checks, for one thing). Not sure why they haven't increased the speed the cap as a result. I could be just because that's the proven stable speed, but I'm a little afraid it's because the game still can't handle high speeds well.
