Darwin's Finches, ruining Exeggutor and Sandslash, Gumshoos, making what I hope is an Ice/Fairy Hail setter.

This is quite the info reveal.

So wouldn't this reveal of older Pokémon having new types/abilities be our first official taste of Delta species Pokémon in the main series games technically speaking? Remember that Delta species have only been seen in the TCG a long time ago.

One read of the Delta Species page on Bulbapedia later and....

No. Not technically. Not how I'm reading it. Seems like an important aspect of being a "Delta Species" is that although the altered Pokemon - which is not done through natural means anyway - has new typing, it retains its old weaknesses. Plus looking at the card art, they all still look the same. These new ones are entirely new sub-species basically. Different enough to say it's not the same thing.

(Which as an aside is going to make reorganizing my living dex just oh so fun! :lol Hope we get more than gen 1 too.)

The Z Ring will have a toy version that triggers sound effects and lights if a Z-Move is used ingame. Probably gonna be popular around here

I like the idea of alternate versions of classic Pokemon. I hope we get a couple more (But don't overdo it). I'm curious why 2 of the 3 we saw were Ice types, especially for a tropical region.

As for everything else, looks neat. I'm liking all the Pokemon, and I like how much variety they're having for the same Pokemon, like the 4 versions of Oricorio, or the 4 colors Minior can be (Finding the shiny for it will be a nightmare, though).
I think the Lurantis line looks pretty neat, and it's cool to see Yungoose's evo, too. I don't quite understand the totem thing, though.

Also, the Z-Move thing is interesting. I'm glad it's one for every type, rather than just one for "Special" Pokemon. I can see combining that with Mega Evo is gonna be a Sweeper's dream when that Ferrothorn or Gliscor comes out :lol

Z-Moves require an item, so it can't be used with Megas unless it's hackmons

I thought the item was player held, not Pokemon.
I guess Z-Moves aren't gonna be very popular, since I don't see many players giving up Choice Items or Life Orbs for a once per battle attack, while Mega Stones will generally be the better item for the Pokemon that can do it.

It depends, as a huge nuke could be catastrophic, probably 'better than Hyper Beam' or something. Not to mention some pokemon don't benefit from Mega Evolution much, Audino and Lati twins

Imma put ice type Ninetails onto my team, thus adding up to four.

Ice Ninetales better have Snow Warning as it's HA to go along with normal Ninetales having Drought.