Actually, for anyone looking in the comments for news of updates or full releases, the group Pomepomelo apparently had a falling out some time in December of 2019. That means that updates might take months to appear, or maybe never.
The reply to their pinned tweet actually states that they're still on very good terms, just that various circumstances have made it difficult to work on the game. Idk if you meant "falling out" as in their working relationships turned sour, but that doesn't seem to have been the case.
Either way I hope they'll be able to work on the game together again, this was a really cute demo!
My bad, that was phrased incorrectly. Despite the circumstances, however, they're taking a break, so we might not get an update for a good long while. Hope they don't shelve this, though, it was a cute and fun demo for a game that would be really good if it came out.