yes we get more mega evolutions and surprising ones indeed
Mega Blastoise

Mega Charizard

Mega venusaur

an item called the Mega Ring holding a special key called the Key Stone will be required to trigger the mega evolution (the key will resonate with the held Mega Stone of a pokemon)

and an new pokemon was spotted during the Nintendo Direct, it's information is unknown as of now

Pokemon Bank, a piece of downloadable software that allows for you to store various Pokémon from your Pokémon X & Y games on the internet

Poké Transporter is a free software that will allow you to transfer Pokemon from your Black, White, Black 2 and White 2 versions to Pokemon X and Y


Welcome to the Battle Tower. - Palmer