Of course soarin' will be permanent! Disney had rides swapped for the 50th but they are all staying there. Disneyland got buzzlightyear which will also be there. It's too much money to make all the rides just be there for the 50th, it will definately be permanent.
The average wait time for Soarin' is going to be 2 hours once it opens so remember to use fastpass! :-) It is rumored that it is called Soarin' not Soarin' over CA because in 2007 there will be a new video for the Orlando version of Soarin'.
Will you get sick? Have you ever been on an Imax? Imax's do cause some people to get motion sickness but if you get sick, it is a ride where you can just close your eyes and you won't feel a thing. :-)
It is an awesome ride. My mom always gets sick and she didn't feel sick on Soarin, she loves it. :-)
Annual Passholder weekend is April 15th-17th. If anyone is going I will be there also. :-)
Supposedly the land may be open for the AP weekend. I'm excited to see what the remodel looks like. :-)