Google have update both Google Maps v3.2.0 and the YouTube v2.2.9 applications for Nokia S60 devices.
Google Maps brings Layers, which I’m still trying to workout what that really means.
YouTube brings compatibility for S60 5th Edition devices like 5800XM and N97.
Download from your Nokia Web Browser at http://m.google.com
Alternatively goto my downloads page and checkout the N97 and 5800XM direct downloads.