The episode synopsis for Pocket Monsters Diamond and Pearl 183 - Begin! The Sinnoh League Suzuran Tournament!! (開幕！ シンオウリーグ・スズラン大会!!) has been released by TV Tokyo. The episode synopsis states there will be new information on the Black and White series as well as the climax for Satoshi. Below is the segment from synopsis with the translation.

サトシの旅もクライマックスへ！シンオウ地方最後のバトル、シンオウリーグが遂に幕を明ける！サトシとピカチュウの夢の結末は…！？▽アニメ新シリーズの衝撃情報を発表！
Satoshi's journey reaches the climax! The final battle in the Sinnoh Region and finally the end of the Sinnoh League! The conclusion of Satoshi and Pikachu's dream is...!? Shocking news about the new anime series will be announced.

Also announced was a new version of the opening song: The Greatest Everyday (BAND VERSION) 「サイコー・エブリデイ！」（ＢＡＮＤ　ＶＥＲＳＩＯＮ） which will begin airing in DP183.

Source: http://www.tv-tokyo.co.jp/program/detail/19406_201007011900.html

GOSH! Can't wait to listen to the new version of Saikou Everyday! *--* It's one of my favorite songs in Pokémon! *-*~ I hope the ending comes out quite good too! :D I liked its title =) Thanks for bringing this news, Sunain! ^^