It is shaping up. Dazzer is currently doing some stuff for a single player Thirty Years War mod so will be preoccupied with that for a few weeks and Juan who is doing the maps has a few other things going on. I have been continuing research and have even done some basic flags for the mod. Hopefully things should pick up again in a few weeks.
I can confirm that the Covenanters will be in the mod (it is roughly set between 1642 and early 1645, just before the New Model is formed, although Montroses men will be present so that takes that bit up to the end of 1645 into 1646).
EDIT (21/02/2016):
Dazzer is currently still busy with his Thirty Years War mod but in the meantime I thought I would share a few things I have done for the Pike and Shotte mod.
Here are some pictures of some of the colours that will (hopefully) be carried in game:
Royalist:Parliamentarian:Covenanter: I have also made an attempt to do some maps. They still need a lot of work, not to mention this is my first foray into mapping:
Philliphaugh, 1645:Whitehall, 1649: