I'm looking forward to that too. I've always preferred Megatron's classic pistol form as my favorite, because it has the advantage of being highly distinctive (and a nod to The Man From U.N.C.L.E.
, whose prop served as the basis), but I like what IDW did in terms of giving him the stealth body. I actually kind of wish he'd kept it a bit longer.
Springer's mold is quite nice, and I haven't noted any of the joint problems Blitzwing seems to have. Mine has good solid joints and I like that they incorporated some IDW elements while also keeping the G1 aesthetic going strong. I've seen other decent Springers show up over the years, but IMO the hardest detail to get right is the shape of the hood. In some other figures it often looks too large or flat, and I think the sculpt here works best.