Just a quick update:

Things were all in place for me to upload the level on the 27th of last month, and at the last minute I somewhat randomly decided not to. I am now adding some new tests to the level, which I am quite pleased with. Stay tuned; the level will be released soon, and I am confident that it will be a test level for the ages. I don't want to give a specific release date, as I hate saying stuff and then letting people down, but I will commit to "very soon."