An anonymous source just told me that the GX2 is due for a release in Spring 2013. Furthermore he told me, that it will not (!) have an integrated viewfinder. Other sources told me that it has design changes and the GH3 sensor.
I don’t know what you think about the GX not having an integrated viewfinder. The Fuji X-E1 and the Sony NEX-6 are selling well and I think a competitor against those cameras should be released. Don’t you? My modest opinion is(as you already know) that a Panasonic DMC-LC1 alike camera would be a hotseller. Hope other sources can soon confirm or deny this rumor! Thanks!
P.S.: Some Panasonic LC1 cna be found on auction at eBay (Click here).
Meantime in US and some other countries the GX1 is as cheap as the GF5:
GX1 price at Amazon, Olympus US store, Adorama, B&H, eBay.
GF5 price at Amazon, Olympus US store, Adorama, B&H, eBay.
Rumors classification explained (FT= FourThirds):
FT1=1-20% chance the rumor is correct
FT2=21-40% chance the rumor is correct
FT3=41-60% chance the rumor is correct
FT4=61-80% chance the rumor is correct
FT5=81-99% chance the rumor is correct