Despite the lack of shake up in OU (despite Heracross deciding to come to UU to pick on the little kids), UU had a lot more changes, increasing in size by 3 to 53 Pokemon!
First, let's start with those that have fallen to NU. Only Slowking, Regirock, and Poliwrath had the misfortune to fall out of UU. That's not saying you can't use them in UU, just that you can also use them in NU as well!
However, many Pokemon decided they wanted to leave NU and join the ranks of UU. Exeggutor, Kangaskhan, Primeape, Qwilfish, and Ursarang have all risen in usage to be no longer considered NU, and are once again UU.
First, let's start with those that have fallen to NU. Only Slowking, Regirock, and Poliwrath had the misfortune to fall out of UU. That's not saying you can't use them in UU, just that you can also use them in NU as well!
However, many Pokemon decided they wanted to leave NU and join the ranks of UU. Exeggutor, Kangaskhan, Primeape, Qwilfish, and Ursarang have all risen in usage to be no longer considered NU, and are once again UU.
Code:
Absol
Aggron
Alakazam
Altaria
Ambipom
Arcanine
Azumarill
Blastoise
Blaziken
Chansey
Claydol
Clefable
Cloyster
Donphan
Drapion
Dugtrio
Exeggutor
Feraligatr
Hariyama
Heracross
Hitmonlee
Hitmontop
Houndoom
Kabutops
Kangaskhan
Lanturn
Leafeon
Ludicolo
Mesprit
Milotic
Miltank
Mismagius
Moltres
Nidoking
Omastar
Primeape
Qwilfish
Registeel
Rhyperior
Rotom
Sceptile
Scyther
Slowbro
Spiritomb
Steelix
Swellow
Tangrowth
Torterra
Toxicroak
Ursaring
Uxie
Venusaur
Weezing