Apple's two biggest problem in the mobile device market, that it's various competitors all hope to exploit, is it's insistence to be the seller of choice for all OS add-ons and content though it's Apple Store, and then there is Apple's pricing structure for 3rd party developers and the content providers.
Google in pushing it's open source Android OS as an alternative to Apple's closed, proprietary iOS, have used these issues to attract a lot of interest among 3rd-party software developers and even content providers, and that has really cut in to Apple's market share for their "i" type devices.

So I doubt they will be introducing any major new types of devices, but look for them to continually make small incremental improvements in their current product lines so they can hold their over done circus shows from time to time and keep the mainstream media hyping their products for them.