Do you mean these titles will lead into the Holiday titles being released?
I.e. something like G&W June. Pikmin 3 July. Wii Fit U August. Then Mario Kart U and Zelda Wind Waker HD in like October or November?
No. You just laid out a likely scenario, though, with probably Pikmin 3 and Wii Fit U in August to coincide with a price drop. Rayman's in September, so that's something decent/decently big releasing each month from August-holidays.
Third party support doesn't seem to be getting any better and I can't see the above being able to turn around the console in a meaningful and sustainable manner in itself, even with a price cut. I'm still ambivalent on how much a title like Mario Kart U or Super Mario U will do for the system.
Super Mario Galaxy didn't sell the Wii in a major way. Mario Kart Wii did, though. Just my opinion on the matter. If given a choice for this Fall, I'd say Mario Kart U would be the preferable title to release, then. On third-parties (in the U.S.), ACIV will be there this Fall (and not miss the release date, this time), and Call of Duty should be on the system, too. Those won't make up for all the games
not coming to Wii U, but they're still better than nothing.
I'm not expecting a miraculous turnaround to Wii levels here. If it can even get back on the 360 2006 track in the U.S., it'll be an accomplishment. :lol