Do we really need another browser?  As long as it’s not Internet Explorer I say sure, why not?  It is going to be based on Webkit so it will be standards compliant and I am sure it will offer many built-in features for Google products I already use.  I am looking forward to giving it a try tomorrow.  It is supposed to be available on Tuesday here.  Kottke did a nice review of the talk going back to 2001 about the Google Browser.