Hmm I'm not so sure. I think the general trend is a march away from tablets back to laptops as many of the benefits the iPad had (such as better battery, instant on, lightweight, no fan) are wiped out with modern ARM chips. In fact today a MacBook Air gets double the battery of an iPad. You also have the market being further squeezed by larger phones.
Personally I think Apple needs to reimagine the iPad as an ultra lightweight laptop/phone companion, a magic piece of paper which is used as a second screen, to draw on, to read, to watch tv where it makes sense and then put away, maybe it even folds, or magnetically attaches to your laptop when not in use. I think this represents a better function for the device rather than adding keyboard cases and trying to turn it into a laptop. Treat the iPad as an accessory to the core devices which are the iPhone and MacBook.
I'd love to see some real experience driven innovation here rather than trudging out spec updates of the Air, the Pro, the base every year.