We Can All Stop Stressing Now

Jumpin' Jehosephat the ratings value is impressive:

The network also renewed fan favorite SUPERNATURAL, which enters its seventh season next year. In moving to Fridays last September, SUPERNATURAL immediately helped make The CW more competitive on the night and dramatically contributed to year-to-year gains on Friday of 66% in adults 18-34 and 60% in viewers. Source

What we don't know yet is whether the 7th will be the last season. I guess they're saving that for the upfronts in May.