Wow the iPad line doesn't make sense anymore. There was a huge difference between the iPad 1 and 2, then iPad 3/4 design.
But now, there's already iPad Mini 1, 2, 3, 4 which look absolutely the same are barely upgraded but have the same price 4 years after? The iPad Air 1 and 2 are the same, but no innovation or news? Plus the new iPad Pro.
Yeah, there iPad line is a mess, but we'll see how the Pro does.
Ipad is becoming more of a mature product line. Macs don't have dramatic changes from year to year either.