Here's the official details from Andy regarding the current status of the Meta Forums:

"Was a good run, folks. The software that runs our forums is finally out of support and unable to run in stable versions of PHP. I figure that's as good a place as any to call it. Site will go offline in July 2016."

If you know anyone from Meta not in the Steam group currently, please feel free to reach out to me directly and I'll add them when I next get the chance. Otherwise, I hope you all do well going forward!