If you were wondering how good the camera sells in Japan just look at the graph posted by Kakaku (Click here). The camera easily beats the direct competition like the [shoplink 26379 ebay]Sony NEX-5n[/shoplink] or [shoplink 23568]Olympus E-P3[/shoplink].
And Nauticam (Click here) just announced the new housing for the GX1.
More USA deals:
E-PL2 with kit lens for $399 at Amazon (Click here).
E-PL1 with kit lens for $289 at Amazon (Click here).
E-P2 body for $249 at Amazon (Click here).