Oh, Sarah Jane

According to wikipedia:  a fourth series of Sarah Jane Adventures has been commissioned by the BBC, it began filming in March 2010 scheduled to air in the Fall. The series will once again consist of 12 x 25 minute episodes with all the six main characters (Sarah Jane Smith, Luke, Clyde, Rani, Mr Smith and K-9) set to return.

The BBC also confirmed that the newest Doctor, Matt Smith will guest star in one of the two-part stories, along with Katy Manning, who will be reprising her role as the Third Doctor's companion Jo Grant. That story will be written by former Doctor Who showrunner Russell T Davies, and will be the first (only?) time he will write for the new Doctor.

Now, when can we see 'series' 3 in the US? BBCamerica, why have you forsaken us!