According to Anime!Anime!, TV Tokyo announced the end of Pokemon Diamond & Pearl this autumn. The new series following Diamond & Pearl will be revealed later.
From April 29th, the story will move on to “Grand Festival” arc and Hikari will participate in the Grand Festival. In July Satoshi will proceed to Shinoh League.
New games “Pokemon Black” and “Pokemon White” will also be released this autumn.
Source: Anime!Anime!
