The last season of Hannah Montana begins airing tonight (Sunday July 11, 2010) on Disney Channel at 8 PM eastern.
Here's a summary of the first episode:
The Stewarts move onto their new ranch home, but Miley and Lilly are aghast that Robby Ray has moved Miley's old bedroom furniture, complete with white bunk beds, pink walls, pink bedding, dolls, a stuffed unicorn and Rainbow Piggy, into their new home, so they set out to make some changes. Meanwhile, Jackson must befriend an obnoxious new kid, T.J., in order to get close to his beautiful cousin Siena who lives next door.
An extended version of the preview promo video: