YES, Generation VI is confirmed. PLEASE DO NOT ADD SPECULATION TO PAGES. As soon as information is confirmed by a reliable source, it will be added.
Please remember to follow the manual of style and code of conduct at all times. Check and Bulbanews for up-to-date Pokémon news and discuss it on the or irc channel #bulbapedia.
Though I wasn't bold enough to put it in the article, I think this is the first time May suffers from a "tragic downfall". Occasionally, to justify a main character's loss, the protagonist becomes extremely overconfident or otherwise filled with hubris, and I think we clearly saw that from May this episode (a sort of bastardized classical tragedy, the idea that if the main character suffers, he or she had better deserve it). It's happened before, to Ash in particular on several occasions. Well, you know the old saying: Pride cometh before the fall...
--ThunderHawk2 (noted after writing the summary)