I haven't been thinking much lately.
iLounge’s iPhone OS 4 Breakdown
11th of April
Safari. “Google” has been replaced next to the keyboard’s space bar with the word “Search.” Ouch.
This makes a lot of sense, as to my knowledge, this is the only time the submit button on the keyboard is something other than “return”, “search” or “go” in Apple’s apps. It also appears to be allowing for the user to change search providers, though I’m not sure that this would be a good move UX-wise.
Edit: Forgot to mention “go” the first time.