Google has just released StreetView imagery for Sweden and Denmark, details of which can be found on Google Maps Mania.
I’ve also heard that various other areas have been updated, including:
UK: New small areas in the UK are now visible. Avebury, Glendurgan Garden, Castle Drogo, Nymans Garden, The Wicken Fen, and many more
Italy: Coverage is expanded, particularly in southern Italy. (Sicily and Sardinia also got updates and look to be near 100%)
Taiwan Expanded coverage.
If you know of any other new/updated areas, please let us know. Some of the best new locations have already been posted on Street View Gallery, StreetViewFun and the Google Earth Hacks StreetView section, so check those out to see the best sights in this new imagery.