Less certain about a message of the day.. I feel like that implies stronger online presence than there really is, if that makes sense? Plus, I try to limit the number of hits to the backend because I'm basically crashing on a friend's internet couch, so to speak.
An update available message might be worth the trouble though, it didn't used to be a thing, but there are definitely a few people out there still playing on old versions, based on score data.
Thanks for the suggestions