Changes are on the way for Nurse Jackie.

The following extended preview for season four, which premieres on April 9, features a wealth of footage, most notably highlighting a brand new Jackie Peyton: no more short hair, no more addiction to pain pills?

Also teased in the trailer: All Saints has been sold and Bobby Cannavale is now in charge; Akalitus is relegated to floor duty; Jackie and Eddie's secret is out; and someone is pregnant!!! Sit back and get an idea of what's to come now:

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