Apple has released new beta versions of watchOS and macOS for developers. New this morning is watchOS 3.2 beta 7 (14V5249a) and macOS Sierra 10.12.4 beta 8 (16E192b).
Beta 8 of macOS 10.12.4 was released last Thursday, along with iOS 10.3 beta 7. With these late stage beta releases, we should expect golden master releases soon, then the public launch.
Apple has scheduled downtime for its online store tomorrow morning, leading some to speculate we could see new products coming.