According to a source close to French site LiveWii, Nintendo is expected to make the announcement for the WiiWare title during its presentation.
Although we've know for quite some time a sequel was imminent, don't take it to heart until we hear otherwise.
However, GoNintendo has it on good authority from a GameStop employee that Nintendo will release a Lime Green DS bundle for Mother's Day, complete with Personal Trainer: Cooking.
That sounds a bit more likely to us.
Our mom's would smack us over that one, though. No joke.
[UPDATE]: Looks like the bundle has been confirmed.