This was previously posted [1], but note that this is different -- the developers have received a notice from Apple acknowledging the mistake and greenlighting the app.
While the uproar over the rejection is most likely responsible for getting the app re-reviewed, it does seem like the uproar was potentially based on a mistaken assumption about Apple's behavior towards competitive peripherals. It is still possible that this is a rollback of an official Apple policy, but the wording of the original rejection as noted in that thread [2] appears to support the notion that the rejection was a mistake.
While the uproar over the rejection is most likely responsible for getting the app re-reviewed, it does seem like the uproar was potentially based on a mistaken assumption about Apple's behavior towards competitive peripherals. It is still possible that this is a rollback of an official Apple policy, but the wording of the original rejection as noted in that thread [2] appears to support the notion that the rejection was a mistake.
[1] https://news.ycombinator.com/item?id=9426542
[2] https://news.ycombinator.com/item?id=9426750