The next WoT patch will be 9.17.1 (yes, it’s not 9.18). This is an interim patch, it is important but small in content.
Estimated release steps:
News from WG — 24-25 Jan.
Exit from ST — 26 Jan.
The official announcement by WG sould come on 26 January.
The output of the first General Test of the patch 9.17.1 — 2 Feb (with possible transfer to 3rd of February).
The output of the second common test of patch 9.17.1 — the second week of February.
The final patch based on the test ~ 2nd half of February 2017.