Right, now it would just currently be updates to the game but things such as tournaments, events, etc would all be sent out with it as well. Basically if someone grabbed information from forums, stuck it into a neat, tidy html email format that looked nice and sent it to those wanting it, well that would be just great. I know "featured" tournaments hosted by people such as blockbyblock would appreciate the extra support and playerbase to his Friday night tourney's.
There is plenty of things going on that the general pokemmo playerbase doesnt know about and I think the newsletter idea would be the perfect idea to bring out some of that into the open.