out of Japan and into US gamers' hands. According to Sony's CES 2008 page, "Your PSP will provide 2D/3D locations, driving directions, POI's, and even downloadable city guides."
No official release date or price - the peripheral in Japan retailed for approximately US $51. Of course, if you're impatient, you can always hack the PSP now.
[Via PSP Fanboy]