Not sure which of these you’ve seen before, but here are a couple mentions of it:
As for a timeframe we haven’t heard much, but there’s been a whirlwind of activity around the Unity release which has taken up a lot of dev time. This is also worth a read Devs, enough is enough, Communicate! - #13 by Sirrian, while it’s not directly related to crafting, it explains some of the dev movements in the last few months.