Shockwave looks very simple (to transform), unlike other Masterpiece toys that seem to find ways to add extra complexity to them... so maybe that simplicity was intentional to make it more affordable without relying on redecos paying for the mould.
The chest for Rodimus looks wrong though, but there is often some tweeking between grey-scale stage and the released toy.
That's four new moulds for 2016 now (Ironhide, Optimus Primal, Shockwave, Hotrod), which is already more than the average (only 2 in 2015, only 3 in 2014, and only 3 in 2013 when counting the cassette 2-pack as one)... I'm starting to think that that will be all, and the rest for 2016 will have to be redecos.
Since these are only in grey-scale stage and Optimus Primal probably isn't even that far yet, these two would probably end up being mid-2016, and Primal at 3/4 of the year (based on the timeframe of grey-scale to release of past toys).