I’m sure I’ll be proven wrong, but I’m skeptical about the high-spec model.
A version that ran “docked-mode” when un-docked would be kind of obvious, but another mode on top of that seems unlikely. I suppose that developers are already explicitly developing 2 modes for docked and handheld, so adding another mode might not be that much extra effort, but unless they’re getting feedback from devs clamoring for more power, it seems like wishful thinking.
Maybe there’s some very easy gains from stepping to a newer Tegra, but it would be hard to manage the marketing. I doubt they’d want to fragment their base with games incompatible with existing hardware. The “Only for New 3DS” was very late in the lifecycle, and also kind of a disaster?