To Be honest I like the new icon but maybe it's because I enjoy having some change in my programs. The old one was nice and all, yeah, but it was just that, OLD. They changed around the look of the program and wanted to give the icon a facelift as well, I don't see the big deal. Then again, I have been using a custom one anyway.
The way I see it, some people are blowing this out of proportion. Refusing to download the new version because of an icon and such. Really people, it's on a mac, how hard is it to change? It would take me 5 seconds to change it back to the old one if I wanted to, just do that instead of complaining?