Hi Craig,
PEx was scheduled for release in September, but I think there has been some delays in the testing schedule which now means the schedule has slipped into October, so hopefully we will have it within the next few weeks.
The IP blocks on Vybrid are a mix, some from Kinetis, others from iMX, we also have some new modules and a few other blocks from other parts, hopefully when PEx arrives you no longer have to worry about that.
Regards
Ross