Here are some updates on what various Wolfers are playing through on Youtube:
JohnLobo87 is currently still finishing his playthrough of the original Spear of Destiny
using the ECWolf engine. Currently he's at level 14. He has also started to reupload some of his older videos, starting with his playthrough of Coming of the Storm by WSJ, which he first played in 2011. You can watch those videos HERE.
LightningBoltForever did a video on Deadly Sleep (by Arielus and Schabbs) about a month ago.
RussianStormxLobo88 finished her playthrough of SoD Extreme II. She has now started a new 100% playthrough: Operation Eisenfaust: Origins.
MrWolfForever is currently still playing through Passage to Hollenteufel, which he has nearly finished. He also created a modified version of E5L7, to challenge himself. You can watch the video of this HERE.
KumanoMTG stated that his next full walkthrough will be Coffee Break Pt. 2. When this playthrough will start is unknown at this time.
GarrettChan finished his 100% playthrough of SoD Extreme II. The twist is that he starts every level with just the pistol and 8 ammo. Very skilled player! He has also just started a 100% playthrough of Eisenfaust: Legacy. He's doing this playthrough both in English and Chinese.
SSGmaster is doing a 100% playthrough of Project Totengraeber SDL by B.J. Rowan.
tankermottind (Executor) did a complete playthrough of his own mod, Wolfenstein Missions.
If I forgot to mention a channel currently doing a playthrough, please let me know in the comments.