The official Japanese Pokémon site and the offical Japanese HeartGold/SoulSivler websites have posted information about the new Champ Path (チャンプのみち) PokéWalker course.
The course will be distributed twice. The first distribution will occur at
Pokémon Battle Challenge events throughout Japan between
October 17th and December 27th, 2009. In Janurary of 2010, another distribution is scheduled but details are currently not available.
The following is a list of Pokémon that will be available in the course with the list of moves and they are: Gonbe (ゴンベ) with Selfdestruct (じばく), Dumber (ダンバル) with Zen Headbutt (しねんのずつき), Tattu (タッツー) with Muddy Water (だくりゅう), Koiking (コイキング) with Bounce (とびはねる), Dohmirror (ドーミラー) with Trick Room (トリックルーム), & Yomawaru (ヨマワル) with Imprison (ふういん).
Sources:
http://www.pokemon.co.jp/special/hgss/news/10.html,
http://www.pokemon.co.jp/special/battlechallenge/champ.html and
http://www.pokemon.co.jp/special/battlechallenge/index.html