Season 8 is expected to start one week after the current season ends, which means we expect it to begin on January 26. When the new season begins, your team ratings, personal ratings and arena points will be wiped clean. Your matchmaking rating and honor points will be untouched.
This also means that Toravon the Ice Watcher will be available to us soon. He is the fourth (and final) boss in the Vault of Archavon.
Good luck to those of you who are competing for the rewards!