In reply to My Gravity: Apparently the feedback to the wall on the lower grades was that they felt like ladders - uninteresting to climb and didn't help new climbers to acquire skills that might be useful as they moved through the grades.
Zippy was asked to set more interesting routes at these grades, so the 'New Wave' means that they should not be too difficult but may have holds that are not jugs or require lateral movement, swapping feet occasionally, etc. Seems a good thing to me and nice that the management are listening to their customers and trying to improve their service.