Regarding the PIN bug...no, I haven't heard from anyone yet on that. As noted, since my company does require a PIN I couldn't check it myself.
I am slightly optimistic that the fix is in this release, given some discussion I've seen on the Moto board, but you never know.
OK I uploaded successfully and have 2 things to say right off the bat:
1. I didn't have any of my apps/settings which I thought it was going to keep (I did verify the new version in About Phone settings) and I see the unlock swipe which is higher and much nicer
2. PIN bug is not fixed for me with this update thus I will be reverting back to previous. As soon as I added corp.sync account it asked to create PIN and when I go into security settings the "NONE" is disabled
Bummer...oh well, it was a nice dream.
So you did a Data/Cache wipe (e.g., factory reset) as a part of the 2.3.15 install? Don't know why apps/settings didn't come back, that's been faultless for me on my D2.