patch is out
You can activate the new renderer via the launcher options (shader option menu)
As already mentioned the patch is pretty big ~4,5gb (about 3,5gb disc space). Lots of stuff has changes with this update since pretty much all 3d models have been edited.
Various 3d models got retextured, some even remodeled (the majority of these changes also apply to the DX version).
There are a few minor issues as described above. I can fix most of them but required to know where lighting errors happen (exact location - if possible with screenshot).
The server also got patched (a requirement to keep the anticheat from banning everyone). I hope that everything went well and it remains stable (could not test it prior release).