The latest two Arms Micron kits have been released in Japan - AMW13 (Autobot 5-pack Advanced Star Sabre) & AMW14 (Decepticon 5-pack Gravity Planet Bow).
Images of the packs can be seen here, along with comparisons to their original versions (the 5-packs are just redecos - no new moulds).

And if you need more ideas for Micron combinations, TakaraTomy have posted up some on their site.