Having just been discussing the lack of new boats from ZET over the last few days it looks like they do have a new kayak for 2018. From the specifications it looks like the Five is designed to address the challenges from the new crop of short (sub 9ft) whitewater kayaks.
ZET kayaks introduces the FIVE, the fifth boat in its lineup. Developed together with top paddlers and the ZET team, this new kayak brings all the components a kayaker can wish for in a boat for active moves on whitewater. FIVE is an aggressive whitewater boat, gliding nicely over waves and holes, accelerating like a demon and holding its line without any reduction in speed.