Quest v67 will finally let you freely position 2D windows, the Public Test Channel build reveals. What Is the Public Test Channel (PTC)? The Public Test Channel (PTC) is Meta Quest's beta release channel. If you opt in, your headset receives a pre-release build of each Quest system software, now technically called Horizon OS, version.Note that there are often features in the eventual stable version not present in the PTC, and occasionally (but very rarely) features or changes in the PTC don't ma...