IF Takara come up with a new mould (or new remould - people seem to think the helicopter mould is ripe for it) for Blast-Off, I would expect to see an exclusive wave consisting of Blast-Off and Groove.

The other possibility is that Hasbro decide to do a box set of G2 Defensor (in line with the currently planned Superion and Menasor) and release deluxe Groove there.

Personally I would prefer G1 Groove as that would allow me to replace Blades in my Defensor line-up, who really is the odd one out with his primarily red colouration (all the others are white) and aerial alt mode (all the others are ground-based emergency vehicles).