Every time we post about a new app update, a lot of users chime in saying they can't see the update yet, meaning the Marketplace on their device is not showing any "updates" on the Tile.
Of course the update is there and in fact if you scroll down you can usually see the new version number listed, but there's no update button. Frustrating! Luckily, there's a little trick: just go in the Marketplace, search for the app, open the description, then back out...wait a second and go back in. This forces a software version-check on the device and now you should be able to update the app.
We're sure lots of you already know this, but hey, we know there's probably even more who don't.