Just updated on my S6, rebooted the watch before charging it, then again after it updated…observations so far:

• someone here mentioned losing their shortcuts. That didn’t happen to me.
• someone else mentioned heart rate complication issues - those are happening to me too. HR complications are invisible, but if you tap where they’re supposed to be, it will still open the heart rate app.
• I’m re-implementing a weather shortcut - let’s see if the battery drain issue it was causing has been fixed…