The season's theme is "Explore Equestria".
Episode title: Flutter Brutter. Definitely the episode where Fluttershy's brother makes an appearance. Expected to air early in the season, at least before June 7th.
A picture was shown of Pinkie, Rainbow Dash, and Maud at Manehattan. Very likely an actual screencap.
What was reported from Toy Fair 2016:>During the Toy Fair 2016 closed door press event, a new season 6 animatic with a griffon named Gabby was revealed. It was strongly hinted that griffons could get cutie marks, and the episode revolves around that.>And joining her, there were apparently some new dragon chracters in the slide. We heard rumors they were Hearthswarming based, but can't confirm that. One looked female.>New Hearthswarming Episode Song Details:>Background ponies team up with mane 6 to decorate>Derpy dropped some boxes, annoyed Rarity, plopped a Christmas star on her head, then hid in a tree branch>All the mane 6 and CMC Sing>Christmas dragons
Chiara Zanni, VA of Daring Do, has said that she recorded an episode back in July.
John de Lancie was involved in recording at least one episode, and that seems likely to be a two parter.