Like I said before. Don't count on it Yukimura.

The original anime series was "toned down" and was very bad... even Ken Akamatsu himself said it on his webpage, that he was dissapointed with Xebec's work.

This new series, by SHAFT, will have no fanservice, and it is not based on Negima!, but rather is a new story from scratch, with the characters created by Akamatsu. Best example of no fanservice would be Asuna getting hit with a kettle (I think) instead of stripping her.

Also, there is a new manga BASED on this series, Negima!? Neo.

Oh yeah... I don't think this I said counts as spoiler since the original manga and this anime will be different...

I suggest watching/reading both though.

PS: Will download ep3 later at home.