Some Pokémon in X and Y have updated base stats; all of which are slight increases. Most of the changes are minor, but they might have an impact in battle.

Here's a list of the changes:

Butterfree now has base 90 SpAtk instead of 80.

Beedrill now has base 90 Atk instead of 80.

Pidgeot now has base 101 Spe instead of 91.

Pikachu now has base 40 Def and base 50 SpDef instead of 30 and 40 respectively.

Raichu now has base 110 Spe instead of 100.

Nidoqueen now has base 92 Atk instead of 82.

Nidoking now has base 102 Atk instead of 92.

Clefable now has base 95 SpAtk instead of 85.

Wigglytuff now has base 85 SpAtk instead of 75.

 Vileplume now has base 110 SpAtk instead of 100.

Poliwrath now has base 95 Atk instead of 85.

Alakazam now has base 95 SpDef instead of 85.

 Victreebel now has base 70 SpDef instead of 60.

Golem now has base 120 Atk instead of 110.

Ampharos now has base 85 Def instead of 75.

 Bellossom now has base 95 Defense instead of 85.

Azumarill now has base 60 SpAtk instead of 50.

Jumpluff now has base 95 SpDef instead of 85.

Exploud now has base 73 SpDef instead of 63.

Staraptor now has base 60 SpDef instead of 50.

Roserade now has base 65 Def instead of 55.

 Stoutland now has base 110 Atk instead of 100.

 Unfezant now has base 115 Atk instead of 105.

Gigalith now has base 80 SpDef instead of 70.

 Seismitoad now has base 95 Atk instead of 85.

 Leavany now has base 80 SpDef intead of 70.

Scolipede now has base 100 Atk instead of 90.

Krookodile now has base 80 Def instead of 70.

Now when i bring my eved raichu over from my 5th gen game, he'll be 10 points faster.

Doesn't really affect any Pokémon I use, but I'm sure there are a few Alakazam and Raichu users who would be pleased by this.

Well this makes some other pokemon viable now
Although I don't agree with..the Alakazam buff though

Strangely, every single buff seems to be a +10. Does it end up making the distribution more even with regard to other similar Pokémon?

So like a lot of things were raised by ten.

I like what Scolipede got, and Nidoking too. I might have to create new movesets for them. But I don't care too much about Raichu's, it's already good enough.

**Update**

More Pokémon were added to the list.

Poliwrath now has base 95 Atk instead of 85.
Golem now has base 120 Atk instead of 110.
Jumpluff now has base 95 SpDef instead of 85.
Exploud now has base 73 SpDef instead of 63.
Staraptor now has base 60 SpDef instead of 50.
Gigalith now has base 80 SpDef instead of 70.

Gigalith makes sence because I had more trouble taking one down recently.

Were any Pokémon hindered though? I'm guessing no.

**Update**

Vileplume now has base 110 SpAtk instead of 100.
Victreebel now has base 70 SpDef instead of 60.
Stoutland now has base 110 Atk instead of 100.
Unfezant now has base 115 Atk instead of 105.
Seismitoad now has base 95 Atk instead of 85.

Whoa, I'm actually quite pleased with these buffs. Except Pideot. That thing needs better Atk.

Two more Pokémon added.

Bellossom now has base 95 Defense instead of 85.
Leavany now has base 80 SpDef intead of 70.

All of them so far are buffs still. I wonder if GF was trying to make it so everything is more viable and they won't separate into tiers so easily.

Maybe, but some Pokémon are still useless competitively, like Linoone, one of my favorites.