With Windows Phone (WP) 8.1, many of the built-in apps are now updatable from within the Windows Phone Store. Unlike on previous WP versions, the built-in apps do not need to wait for the next OS update to be updated. These apps now can and do update regularly just like other apps you install from the Store. I have already seen many of them being updated recently, and WPCentral documented today that the Games app has been updated. To compliment this, these apps now have their dedicated Windows Phone Store landing page just like any other apps you find in the store.