According to the latest issue of CoroCoro, details on the follow-up title release to Pokemon Diamond and Pearl for the Nintendo DS are expected to be revealed in next month’s issue — on sale May 15th…

From the image above we can see a listing, or rather a timeline of all past Pokemon handheld titles, including Red/Green, Gold/Silver, Ruby/Sapphire, and Diamond/Pearl — with Blue, Crystal and Emerald also shown in parenthesis. However there’s a gap open for 2008. Be sure to check back once more details are announced.