Fans of the third generation Pokemon games were in for a treat a few months back as Nintendo announced the arrival of Pokemon Omega Ruby and Alpha Sapphire coming later this year as updated remakes of the GBA classics, and the latest trailer brings even more treats for fans to look forward to.

A new trailer for the game shows off more of the revamped Pokemon X & Y styled gameplay, but in addition also heralds the arrival of a new Mega Evolution through Mega Metagross, the beefed-up version of the Steel/Psychic type Pokemon.

In addition to Metagross's new Mega Evolution, the trailer also shows off some of the updated features expected to make their way into Omega Ruby and Alpha Sapphire, such as revamped versions of the game's gym leaders and the infamous Elite Four, and the return of the Pokemon Amie system from Pokemon X & Y that allows players to dress up their pocket monsters in a completely adorable fashion.

Pokemon Omega Ruby and Alpha Sapphire releases for 3DS on November 21st, 2014 - in the meantime, you can check out the new trailer with Mega Metacgross and more below:

//www.youtube.com/embed/P-wTDPviFq8