I'm a bit out of the loop right now but I'll wait out and see how this develops before I start my clicks!
This sounds vaguely similar to one of the proposed changes which the NEM pay model is going to bring - but it was only changing, not getting rid of incremental progression. I'm sure NEM is going to make you wait 2 years for the first increment rise after a promotion then the subsequent increments will be annually. This was one of the changes needed to bring in the 4 different supplements at levels where there would be a noticeable difference between the supplements.
That said, the announcement of the NEM pay model was meant to have been shortly after the general election - I don't think it's been revealed yet and it's supposed to take effect from 1 Apr 16