A special event will be available for a Meloetta musical via Global Link in Pokemon Black 2 and White 2 (so musicals will be in the sequel???). Another interesting fact is that Meloetta and Keldeo will unlock something special in the upcoming game, but it has not been 100% revealed yet. Also, gym leaders and champions for the Pokemon World Tournament (I really like the tune of that) will supposedly be downloaded via Wi Fi Connection. On small note, the first US name for a town has been revealed. The first city in the game, Hiougi City, has been revealed to be Aspertia City. Also the US box art has been revealed as well.
In the Pokedex 3D Pro news, the dex is to have a new feature called Pokemon Challenge, which its functions are not known yet. Also, all pokemon will be unlocked from the start, eliminating the frustrating and upsetting "trading data to complete pokedex" task. It is to release this autumn. Also the first English entries have been revealed.
For the Pokemon AR Searcher, its official name is Pokemon Dream Radar. As we already know, it's compatible with Black 2 and White 2. It takes place in an area named Dream Valley (My house? My backyard? My truck?) Enough daydreaming, anyway, this valley is where Professor Burnett studies. Transfers of caught pokemon will be direct through the 3ds system. Like the pokedex, it will be released in autumn. Also, just for kicks, the Tornadus silhouette has been revealed.
As a bonus, the "official?" artwork for the Kami trio Sacred Beasts have been revealed. I will re-inform if this changes.