Who Will Be The Next Big Country Music Duet Partners?

Country music has certainly had its fair share of country music duet partners.  We've had Dolly Parton and Porter Wagoner, Loretta Lynn and Conway Twitty, and the classic pairing of Johnny and June.  The question is, will there ever be a pair like any of them again?

Over the last couple years, we've seen some big songs come from male/female duets of Jason Aldean and Kelly Clarkson, Brad Paisley and Carrie Underwood, Tim McGraw and Faith Hill, and although it's not a duet, Miranda Lambert has sung backup for Blake Shelton.

Do any of them match up to some of the duets of the past?