I believe Apple will only be allowing background processes on a case by case basis. I guess its good and bad. Keeps it stable, but makes it a pain for the developer that wants to run something in the background.

Its likely that devs who just do it willy-nilly will get denied when they try to distribute via the AppStore.

For me, I don't mind this as its my phone, and I don't want the instability of my past Windows Mobile phones (after a few app installs). So I suppose that a benefit of having a separate device, you can have unstable apps.