Microsoft has pushed out a couple of updates to some core apps on Windows 10 and Windows 10 Mobile this evening, including new versions of the Xbox and Store apps. Unfortunately, there isn't much to glean from these updates, as there are no documented changes to go off of.
It's likely that these updates simply contain some bug fixes and performance improvements, which are nothing to scoff at. If you want to grab the latest Xbox app update, be sure to hit up the Windows Store link below. As for the Store update itself, you'll have to check for new updates inside of the app. And be sure to shout out in the comments below if you happen to notice anything new or noteworthy.
Thanks to @Win10Fan on Twitter, Omar and Andrew for the tips!