When a product disappears from the market, that's often a sign that a successor or replacement is on the way in the near future. In this case, it's possible tha

When a product disappears from the market, that's often a sign that a successor or replacement is on the way in the near future. In this case, it's possible that Apple is planning to step up their game in the product segments where these third-party devices compete. Of course, it's also possible that Apple simply doesn't find those third-party accessory sales to be worth the trouble any more.