If anyone missed it, here's the Etsy announcement about the upcoming changes:
https://www.etsy.com/ca/teams/7716/announcements/discuss/18929533/Seems to be some speculation about the magnitude of the changes to teams and the forums - more info to come, maybe - but it does look like any team threads pre-Jan 10 2015 will be gone forever.
So...if there is anything anyone might want to personally save, they should before Jan 10. Or, bumping an old thread should make it current and available after Jan 22.