www.pokemon.com/us/pokemon-news/see-new-zygarde-formes-in-animation-news-from-japan/
Confirmed no Mega Greninja. Zygarde Perfect Forme now known as Zygarde Complete Forme. Plus just general information on all the formes, in English now so no spotty Japanese translations.
In all fairness the original Corocoro translations indicated no Mega Greninja. But its noce to get it in black and white.
So I found out that the theme of the Legendaries is based off Norse mythology. Which makes me like it more. The dog form is based off Fenrir for example. I’ll post an article about it when I have access to my laptop unless someone beats me to the punch.
Waiting for Shiny Mega Primal Zygarde Complete Forme.
www.tv-tokyo.co.jp/anime/pokemon_xyz/
New trailer and hi-res images revealed. Seems to confirm that Zygarde 10 will receive Thousand Arrows, and Zygarde Complete will receive Thousand Waves as exclusive moves. These moves were programmed into X/Y but were not used. Their animations left little doubt that they were meant for some forme of Zygarde.
Not really with it. 
I really dislike the look of a lot of the newer Pokemon…
I’d just like to share some thoughts I have, anyone who reads it can mull over it or whatever and decide what they think.
It’s totally fair to dislike the newer Pokemon, and to think that the ‘Perfect Zygarde’ forme looks un-Pokemonish, or just downright silly(Personally I am indifferent). But just think if the Pokemon designers just stagnated and constantly made simple, no frills type Pokemon like a lot of Generation 1 and 2 Pokemon were then the franchise would not be a continued success like it has been. They cannot just do the same things over and over again when it comes to the Pokemon designs. So much of the games remain constant and repetitive they cannot allow the Pokemon designs stagnate as well.
They need to be unconfined and unrestrained as to what ‘counts’ as a Pokemon, if they had major limitations and were told what they can and cannot do then we wouldn’t have some of our favourites today. Imagine if someone said that having a floating Magnet was a stupid idea and wasn’t allowed? Or that a Tortoise with cannons on it’s back was a stupid idea?
They are going to have hit and miss, not every design is going to be perfect. I really dislike most of the Mega designs but a few of them are amazing and we wouldn’t have those awesome designs without having the bad ones too.
I also find it funny that I have seen people(not from here) complaining that the Zygarde 10% forme is boring because it’s just a doberman with green/black hexagons on it, yet those some people probably harp on about going back to the ‘glory’ days of Gen 1/2. That Zygarde 10% forme is about as Gen 1/2 as you can get.
That is a very fair critique. It is true that we do not know how the dominoes of inspiration fall. It could be very well because of the designs we dislike that the designs we love have come to be. And the longevity of the franchise has proven, for me, that some trust is deserved in regards to what will and will not be successful in designing Pokemon.
Well said, @milhouse.
Really cool Zygarde history.
www.youtube.com/watch?v=23_gmQ_0d74
God damnit Jeremy I thought there was some real news and got excited for a second.
Does this makes Pikachu Thor?
Forgive me!! 
lol