I have advocated this since GH1 days. Canon DSLRs have their own category and Blackmagic cameras have their own category - it is well past time for the innovative and trailblazing Panasonic G and GH cameras to have their own category.
+1 for this. I was just looking to see if a GH4 group had been added yet and couldn't agree more. There are a few groups on Facebook but I think there is certainly room here on the COW for a dedicated forum for it.