Received the update Thursday the 20th. The next morning (Friday), Sirius wasn't working for the first 15-20 minutes of my drive until just that portion essentially reset and acted like I had just started a subscription. I even got the message saying "your subscription is now active, click here to continue!" on the screen. A little odd seeing as how I never touched my existing plan.
The day after that (Saturday) wireless CarPlay wasn't working, and it was having a hard time connecting to my phone in general via bluetooth. Unpaired, repaired, and then went into the settings on uconnect to tell it my phone was my "favorite" along with enabling most of the settings on that screen, and wireless CarPlay came back. It worked when plugged in via cable, so that told me it was a bluetooth issue. Strange that it was working just fine immediately after the update and took an extra day to act up.
Other than that, the update was trouble free and everything seems to be working like it did before (which mine has been pretty solid compared to what others have reported, knock on wood).