Are you a heavy user of Google Maps for Mobile? Google has announced that both Street View and Walking Directions have been added to the handheld application. If you want to see it in action, go to google.com/gmm from your mobile browser and then download the application for your phone.
While this is promising and I'd love to see it myself, some forum members are reporting issues with street view. There are three separate reports that street view is not available on the new version for Windows (188.8.131.52). I just downloaded 184.108.40.206 for my Palm OS (yeah, sorry Google, I'm that old school) and I, too, don't see it.
Forum discussion continues at Google Groups.