The Centro has been out for some time. The only new thing here is issuing one in pink, aiming at the teen girl market. The timing against Steve Jobs' announcements is a non-issue.
Palm claims the Centro is doing nicely, thanks. The question, since Palm is trying to position is as an "entry level" device is what they have that might be considered an "upgrade". The answer at the moment is "not much". There are rumors of a new Treo model in preparation that will (finally) include Wifi. We'll see who offers it, as most folks get phones through service providers, and the carriers aren't enthusiastic about a capability that would compete with their data plans