i have a couple of small spots where there is a rainbow effect; however you only see this when the screen is black, NOT when its "on", so I can live with that..I mean, who cares what it looks like when the screen is off?
and, since they acknowledge this issue, and a screen "upgrade" is coming, its not a deal breaker, by any means..
If it bothers you so much, just push the damn screen protector out, and use one that adheres directly to your phone..I bought this phone for the total protection it offers,,