In my case it was Finance and Sports but that depends of course on which updates you have installed.
You can also try checking manually for the app updates from within the Store by going to Settings-App updates.
I restarted and it showed no updates. A few minutes later it is showing 2 updates again. Either way, I'm not going to worry about it. I'm glad I got Games working again. It had previously stalled on Pending for about 2 weeks until I restarted the service. I was having a huge issue with not being able to log into Games for Windows Live for my games. It's working now, but I'll still do a format and clean install in the future. That is, when Creative updates their horrid beta drivers.