Well, judging by the episode titles, most likely next will be Barn Mates, and it'll cover Peridot gaining Garnet's trust like she has with Steven, Pearl and Amethyst in the last three episodes.
And after that, most likely it will be Gem Drill with them finally going after the cluster.>>77950460
They've actually posted images on the crew's blog all the other times they went on hiatus saying when they'll be back.
One hiatus they even gave the wrong date. Said they'd be back one month, that month came, they put up another image saying "Our vacation's going a bit longer, see you next month instead"
This time though, complete silence.