Seems fine to me to leave it up. I had forgotten this was even a thing that had been announced. If the thread doesn't end up getting used, it'll just fall of the front page--no harm, no foul.
Speaking only for myself, what's with the reverse slash in the date in the thread title? I have to be familiar with many different types of date/time notation, for my work, and I've never seen that before.
^ We do live in a world where a lot of people say "backslash" when they mean "(forward) slash"....
"Sometimes it seems as though the whole point of the Japanese writing system is to keep non-Japanese people from understanding what the hell is going on." — Dave Barry
I deliberately said "reverse slash", however, because it's the reverse of the slash that is typically used in date notation.
And it can't be dismissed as a typo, either, because they're two completely different keys. Which is why I'm asking — is it some notation that I've simply never encountered before?