It's open again! Meaning I can finally post this: I think it has been confirmed there are no Abilities. In addition to the above Pokedex video where no where on it shows Pikachu's Ability, there was another video released:
In it, we see them have Kangaskhan Mega Evolve, use Dizzy Punch (which animation always shows it hitting twice), and then cut to Ninetales fainting. There's also Mega Gyarados but that's not the point. The point is: They carefully edited the video to purposely not show the ending of the attack (where Parental Bond would have activated and attacked again). The major thing about Mega Kangaskhan is its Ability, Parental Bond. It's the reason why it's not the mother that Mega Evolves but the baby. If for some reason they wanted to hold back that Abilities were in the game as a "surprise", now would have been the time to do it. Heck, with Gyarados having Mold Breaker they could have showed it using a Water-type move on a Pokemon with Water Absorb. But they didn't. And I feel that's the final nail in the coffin. Heck, there was no reason NOT to show Abilities in the first place, so their absence from the start was already telling but we didn't want to believe such a STUPID decision would be done.
Why no Abilities? Because these games directly connect to GO which doesn't have the Abilities yet? Well there's a lot of things in the game that GO doesn't have yet that isn't stopping you from giving to Pokemon transferred from GO, so why are Abilities taboo?
Eitherway, I think it's now fact Abilities don't exist in the game. So, what does it mean for certain Pokemon? Well it's 6 in the morning so right now I'll only go over the Mega Pokemon:
Venusaur (Thick Fact): MV was made to be bulkier and Thick Fat really helped with that by lessening two of its weaknesses. While nothing too major, MV is a little less bulky now having Fire and Ice moves do 2x damage again.
Charizard X (Tough Claws): MCX gave a bit up to become a Physical Mixed attacker. In addition to making Attack equal to Special Attack it was also given Tough Claws for that additional physical boost. But with no Tough Claws that really affects how you'd play MCX. It changes to just a Mixed attacker. Alright, but with MCY having a WAY better Special Attack stat many did play MNX with a physical set. Sure, now you're not giving much up having Flamethrower/Fire Blast/Heat Wave on MCX along with Outrage, but one of the things which really separated it from its counterpart is pretty much now gone. At least it still has the Dragon typing.
Charizard Y (Drought): With it being a wallbreaker it really stinks that not only does the immediate boost to its Fire-type attacks are gone but also instant Solar Beam which handled its Water and especially Rock-type weaknesses. Nothing too major though, it'll just be like a MCY which lasted in a battle for over 5 turns. Unlike MCX it didn't give much to its Attack so still has sky high Special Attack to its name.
Blastoise (Mega Launcher): Goodbye Water Pulse, Surf is once again the preferable (100% accuratte) Water-type move here. But that's all that really changed. Sure, if they give it the other "pulse" moves they wouldn't be powered-up, but they at least provide coverage and powerful enough they aren't a bad choice.
Alakazam (Trace): Well at least you don't have to worry about going into a situation where Alakazam gets a hindering Ability or one that helps the opponent. I imagine MA is picked usually without thinking about what Ability it'll get from Trace so no big loss here. Normal Alakazam is probably more annoyed it lost Synchronize/Magic Guard.
Gengar (Shadow Tag): I think some players would see this as a blessing more than a curse. MG is powerful enough it won't miss Shadow Tag, was just a handy thing to have to maybe assure one knock out without worrying about a switch being resistant or immune. Though Gengar now being phased through the ground makes a bit less sense.
Kangaskhan (Parental Bond): I think one of the biggest effected, MK was all about Parental Bond even with its design. Now with it gone, it's just a better Kangaskhan but nothing that really stands out.
Pinsir (Aerilate): But at least MK didn't get a Type it couldn't use! Pinsir learns NO Flying-type moves! And even if it did, it still wouldn't have beaten Aerlilate turning Normal-type moves into Flying as they also got a Power boost from it! And from what I'm seeing, the only physical Flying-type moves it could learn that'll also make sense for its normal form is Aerial Ace (60 Power) and maybe Acrobatics (and since items don't seem to be a thing either, will be staying at 55 Power).
Gyarados (Mold Breaker): Huh, so MG lost the Ability that allowed it to ignore Abilities... so in other words nothing changed? Normal Gyarados lost Intimidate and Moxie though, so that's sad.
Aerodactyl (Tough Claws): Unlike Mega Charizard X, MA didn't give up anything to be a physical attacker so it overall is now just a more powerful Aerodactyl, which is alright as it's very fast.
Mewtwo X (Steadfast) & Y (Insomnia): Having both MMs here because was their Abilities ever a factor? You picked one of the MM because it was a suped up Mewtwo, giving it a better Ability would have made it even more OP.
Beedrill (Adaptability): Well, at least MB was min-maxed to give it high Attack and Speed so losing its Ability isn't too terrible but does make it look less favorable cause it still has low defenses.
Pidgeot (No Guard): Hits MP harder than you think as it was essentially made to use Hurricane. Still has its higher Speed and Special Attack so it's not too worse off.
Slowbro (Shell Armor): It'll be fine. Even with crits affecting it it'll still probably be able to take one or two.
Maybe later today I'll also look at other Pokemon, including the Alolan forms.