Nokishita Camera just published additional details on the GR III and its accessories.
【噂】リコーが間もなく発表する商品リスト|軒下デジカメ情報局
- new image processor GR Engine 6
- 3-axis image stabilisation; efficiency is 4 stops
- Bluetooth and Wi-Fi.
Accessories:
- wide-angle converter GW-4
- lens adapter GA-1
- ring cap GN-1; two versions: black / dark grey
- battery DB-110
- charger BJ-11
- soft case GC-9
- soft case GC-10
- metal hot shoe cover GK-1
- AC adapter kit K-AC166J
- protector jacket O-CC173
- protector jacket O-CC174
- soft case SC-900.
Available in March or late March, they aren't completely sure which.