Agreed on the cab layout and size. My parents have a 2020 CCLB. It's almost as long as my Tundra, but inside it's really cramped. It's perfect for a local runaround truck. But it's pretty terrible engine wise for anything more than empty commuting. And towing their little R-Pod is a 7mpg affair. Even with my 4Runner I'd get more like 10. The 2GR is just all-around underwhelming. It's overdue for an update by about a decade.
It's moving to a shared GA-F platform (same as tundra, LC300, Sequoia, 4Runner, lC USA, GX, etc.) So, it'll almost certainly be a coil spring rear axle that is shared with the 4Runner, LC USA, and others. Most likely it'll be either the current 8.7 or 8.2" rear axle in a 5 link coil setup. Basically just like the current 4Runner. I can't imagine it keeping drum brakes.
From another thread - engines are very likely to be 2.4 turbo 4cyl/hybrid in TRD Pro only. T24A in the mid range models. And possibly a NA 4cyl as a base engine. So the common engine is likely to be the T24A with around 270hp/310tq. Slight upgrade from current 2GR and should be much better for drivability over the 2GR because it has a lot more power at 1800-2500 rpms and a 10 speed. But it's also well short of the power in the GM 2.7 or Ford 2.0 turbos in those trucks. And the hybrid will also likely be significantly short on power vs the high output engines in the Ranger or GM twins.
The reason I don't think we'll see it stray from the 4Runner this time is because Toyota is consolidating pretty much everything into basically 6 engine combos for north america. NA 2.5 4cyl, T24A turbo 4, and V35A turbo 6. Each with and without a hybrid. I think it's safe to assume that those are going to be the only options to choose from and they are apparently not letting the engineers use the TTv6 except in the GX550 and possibly 4Runner (unlikely). Assuming that to be the case - which might not be true, but I'd bet on it - I think that leaves the Taco with the T24A and T24A/Max being the two engine options. I can't see how the NA 2.5/hybrid would be even close to having enough power for anything other than a base 2wd model.
I don't think the iForceMax emblem means the TTV6. That would be wildly out of character for Toyota who wouldn't even offer a low 300's hp V8 in the 4Runner or Tacoma or the 435hp hybrid in the LC300 or LX600 to all of the sudden offer that in the Tacoma. Would it be amazing to have the rough analog to a true Ford Raptor in a Taco? Sure. Not a chance it'll happen IMO.