the GH series of Micro Four Thirds system are the current top models made by Panasonic and are differentiated from this G series by:
over-sized sensor allowing uncropped native 16:9 aspect ratio images
highest HD video capabilities with highest movie quality
automatic eye detection to activate and deactivate the built-in EVF
top panel switch controls that make it easier to select:
focus mode: S-AF, C-AF or MF
drive/self-timer: single, burst, self-timer
largest buffer and thus fastest burst rate
more powerful built-in flash
higher price
G3 was announced in 2010 and was the best value/features for money mirrorless camera during 2011 with its built-in EVF and flash, touch screen, swivel and rotate LCD, very good HD video quality, and fast AF.