Commits today, this evening, and tomorrow are going to break a few ABI's. Since we're breaking one, we might as well fix the other little niggling issues at the same time.
If you are on master, we recommend not updating until new binary packages are available for it, which might not be until the weekend or possibly even early next week. If you decide to upgrade anyway, a full world and kernel build is required. Commits are still incoming, but by tomorrow afternoon they should all be in. I do not recommending rebuilding until at least tomorrow evening, or later if you also need to update ports. -Matt
