Playstation Blog announced, once the PSN store gets running (still uncertain), they'll be doing multiple updates per week until they catch up. This means more posts in these threads to scan quickly past, sorry.
In addition, PS3 has added an MLB.TV app. You can subscribe to get all (out of market) games, or you can use your existing subscription if you've signed up on another device. quick comparison: $100 for SD MLB.TV $120 for HD MLB.