So that confirms that this is in fact a mix between the Tamagotchi Connection V3 and the Keitai Kaitsuu Tamagotchi Plus.
I'm going to hope that not including any of the V4/V4.5 features is a hint at maybe doing a V4/V4.5 rerelease later (because those are my favorite Tamagotchis), but even just a V3 release is amazing to see.