LetsGoDigital has posted a detailed preview of the new Ricoh GR digital II. The preview is accompanied by some very positive editorial comments about the pre-production unit they have in hand. One interesting comment in the preview is that the GRD II uses "the same CCD image sensor as that of the GX100 camera." I haven't seen Ricoh confirm this anywhere, but the GRD 2 RAW files I have seen do have a similar quality to GX100 RAW files. Lars Jeppeson, an owner of both cameras, made a similar observation in the Ricoh Forum and posted some examples of processed ISO 80 and ISO 400 RAWs.

Most if not all of those who own both the GRD and GRD II seem to feel that the latter produces significantly better image quality than the former, particularly at higher ISO. According to the LetsGoDigital preview, the GR lens is said to have been left unchanged with the new model.