According to Jump Square Magazine, a new manga series of "Prince of Tennis
" was announced. It will start publishing from Jump Square April issue which will be released on March 4th 2009.
A parody manga of Prince of Tennis "Houkago no Oujisama (Prince of After School)" has started from the December issue of Jump Square Magazine. The author of the art is Sakura Kenichi
and the author of the story is Konomi, Takeshi
Source: Scan of Jump SQ
Source: Mohyoujou news