I don't have sysapp pusher installed. It was just the number counter on the app store live tile.
As for number of apps installed, I have about 100, including the pre-installed ones like calendar, messaging, IE, etc.
I didn't make a note of all the apps that updated yesterday, but some of them included amazing weather, Amtrak, battery, Bing sports, craigslist+, Facebook beta, jack of tools pro, mytrekdata, almost all of the Nokia camera lenses, and many more. They also included updates to extras+info, glance, and network+.