tipztv oops, looks like I missed your last post - sorry!
Every solution will require you saving in-game variables to a remote service, then the tile retrieving that either automatically or through a remote push.
Scheduled local tile updates look like they could be added to the plugin viably, and would be a good way to notify users of new IAP or updates.
devhammer Thanks for the info! Unfortunately the Azure Mobile Services plugin for Windows Phone isn't currently in the pipeline, but that may change depending on demand.