I noticed that too - I think he's had it that short before.
However I couldn't help noticing his short hair made it look as if he was thinning on top http://www.hazzamon.co.uk/tvforum/dobbiehair.jpg
He's had it short for a few months now. He's in my list of favourite presenters, he gets the job done well and really relates to the viewer. I enjoy flicking onto News 24 at the end of the day to catch him.
I think he looks vicious in that photo especially with next to no hair. Short hair has always suited him, but at the moment the length is taking it to the extreme.
I did like the comment about the ticker. Very funny.