Apple's quietly rolled out software updates to OS X El Capitan, iOS 9 and Watch OS today. The updates bring a lot of improvements, fix bugs and improve the compatibility of these operating systems with various third-party apps.
OS X 10.11 for El Capitan gets bug fixes and improvements related to Office 2016 which has been quite problematic, Mail, VoiceOver also get updates and Apple's released more than 150 new emoji characters including some for tacos and the much anticipated middle finger emoji.
For iOS 9.1, Live Photos functionality on the iPhone 6S with motion sensing capability that avoids recording Live Photos when the iPhone is moving, we also get new wallpapers incliuding Mars, Jupiter, and Neptune. It is has been noted that this release is in preparation for AppleTV (coming next week) and the iPad Pro (November).
For WatchOS 2.0.1, focus is on a fix for an issue that could cause software updates to stall. Fixes for issues that were impacting battery performance. A resolution for an issue that could prevent a managed iPhone from syncing iOS Calendar events to Apple Watch. All of these updates are available via Software Update right now.