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?