After much time working on the central part of the map the mainland's pretty much done. I still need to name a few things (rivers, a mountain range, some hills) and might make small changes, but it's at the stage where I can use it for to keep my writing consistent.
I haven't done the map for the Fettered Isles or Cara's Rock as yet, but I plan to get that done at the same time as I'm writing Kingdom Asunder.
In Bane of Souls the action was confined almost entirely to a single city, and in Journey to Altmortis the map was pretty simple. The Dennish map is far more complicated, and I'm relieved to get a basic version sorted. It'll be relevant for every book, so it was important to get it done early.
I can't say precisely when I'll start the first draft. I'm still working on redrafting Sir Edric's Temple, and a change to the start of Kingdom Asunder (which fits well and makes sense but necessitates some more work on the early chapters) will delay things a bit.