What is "soon" for you? From the last Scawen comments about progress, if the patch would be near completion, the test-patch section of forum would be opened. It is not. And the tone of his comment made it very difficult to guess any time frame, but it certainly didn't sound like it will happen in weeks-near future, more like months of work to be done.
Also the current sore state of unofficial servers will probably force him to postpone the content patch further, and spend few weeks on refactoring network code for next patch (as he can't release content, and then only anti-piracy changes, that would make no sense), so if there's like months of work on content, add another 1-3 months on the network anti piracy code... and summer 2018 is sending its greets... maybe...
Anyway, I personally just hope the new tire physics will finally shape up well, without any major setback, and that it is getting closer to being finished. The time frame doesn't matter with this one any more, but as long as it is progressing, one day it will be done.
(I'm not insider, everything in this post is pure speculation).