Xcode 7.3 pointer missing nullability warnings

I updated to Xcode 7.3, and afterward ran sudo for UI for iOS Q1 2016 (March 8).  

Afterward I opened a Swift project that uses UI for iOS.  It compiles, but throws a screenful of warnings about pointer missing nullability type specifier (see attached).

 I can run into the simulator and it seems to be working so far...but am concerned about the warnings.

I assume this is a Swift evolution issue -- are you guys aware of this, and will you be patching to enable clean builds with Xcode 7.3?

Thanks,

Rob