There aren't any 3rd party Wii games I'm looking forward to. The best 3rd party game that is currently out that I have played is Kororinpa, which I wouldn't buy. I'm sure RE4 is a great game but I simply do not play remakes. There are too many new experiences out there to replay a game I've already finished. I'm looking forward to the big Nintendo games, but there just isn't anything else that is catching my eye.
I'm going to E3 next week. I'm excited to talk to 3rd parties about their future plans. I really don't think you'll see many top tier games announced for the Wii. Remember, this was Nintendo's baby. I don't think a lot of developers even care for motion controls. You'll see the cash ins and ports since they make money, but games like Resident Evil 5 and Metal Gear Solid 4 will not be coming to the Wii.
The good thing is, you can bookmark this post and see in just one week if I'm wrong. It's pretty immidiate, eh? I don't think you'll see top tier development teams announcing exclusive games for the Wii next week.