The new ones on the scene are:
Scolipede
Baton Passes Speed Boost, Substitute and Swords Dance.
Sylveon
Baton Passes Calm Mind and Substitute.
Mega-Absol
Baton Passes Swords Dance and immune to Taunt because of Magic Bounce.
Otherwise, everything else is pretty much the same. Ninjask, Jolteon, Vaporeon, Umbreon, Espeon, Volbeat, Blaziken, Venomoth, Togekiss, Celebi, Mew, Mr. Mime are all still in play, and also SmashPassers like Huntail and Gorebyss.
As for how to stop them, Taunt is the usual method, especially Prankster Taunt. Whirlwind & Roar will work as well, but Roar won't against Mr. Mime because of Soundproof. Haze will also work.
Another way to do things is to set up some Rocks and phase ASAP so it'll faint Ninjask.