The official TV Tokyo summary for the 310th episode of Pokémon Sunday has confirmed the rumour that the series will end on September 26th, 2010. Pokémon Sunday (ポケモン☆サンデー) is a Japanese variety show that debuted October 3rd, 2004. Most of the cast has stayed the same throughout the series but the notable departure of Becky (ベッキー) in 2006 and the addition of Shoko-tan (中川翔子) was the only major cast change during the series 6 year run.

The series final episode: PokéSun Series Finale - A Release of Famous Scenes, Strange Scenes and Treasured Clips All in One Go! / The PokéSun Company Disbands!?? (ポケサン最終回、名場面・珍場面・秘蔵映像を一挙放出！ / ポケサンカンパニーも解散！？？), will review highlights from the series and reveal what is happening to the PokéSun Company members.

A new series titled Pokémon Smash has shown up in Japanese TV guides for Sunday October 3rd, 2010. The new series will probably be Pokémon Sunday's replacement as Shoko Nakagawa (中川翔子) had confirmed on her blog that she will be a host.

Source: http://www.tv-tokyo.co.jp/program/detail/18687_201009260730.html