Pokemon Omega Ruby and Alpha Sapphire's three starters have now had their Mega Evolutions revealed..
When Pokemon X and Y was released last year, one of the biggest changes it brought with it was the "Mega Evolution" - the ability for fully-evolved Pokemon to temporarily transform into a more powerful form for the duration of a battle. Basically, Super Saiyan for Pokemon. Now that Pokemon Ruby and Sapphire remakes have been announced for this year, it's inevitable that they would come with their own suite of new Mega Evolutions. Serebii has obtained scans from Japanese magazine CoroCoro that show just that: Mega Evolutions for the remaining two Generation III starters (Sceptile and Swampert), as well as its two "Mascot Legendaries" (Groudon and Kyogre).
It also appears that Diancie, one of Pokemon X and Y's distribution-exclusive legendaries, is also getting her own Mega Evolution.
Check them out, as well as images of the updated player characters and rival, below:
Mega Sceptile is Grass/Dragon-type while the others maintain their original typing. Mega Diancie's ability is currently listed as ??? while Mega Sceptile has Lightning Rod and Mega Swampert has Swift Swim. Blaziken, the third Generation III starter, has already had a Mega Evolution since the launch of Pokemon X and Y.
It's worth noting that the magazine describes Groudon and Kyogre's new "Mega Evolutions" a little differently. It refers to them as a regression called "Ancient Devolution", and the Pokemon become "Primal Groudon and Primal Kyogre" instead of the usual "Mega".