No pressure, Addison Montgomery, but you have a decision to make. And it will alter the course of three lives.

So teases the short/intriguing promo for Private Practice Season 6, which we know will be the last for Kate Walsh and which may very well be the last for the ABC drama in general.

As a result, Shonda Rhimes has already teased new episodes as unlike any other in show history, with no rules and no holds barred. We're not sure what that means. But we'll be tuning in September 25 to find out.

Watch the first Season 6 promo now:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.