Why is Bones not being aired until April? Episode guides show season 5 should already be at episode 17.

As far as I know, it's because Hart Hanson wants to keep the last 8 episodes in this season together, each week with no breaks. If they continued now, they'd be finished the season very early, whereas they want to finish it in May.

What was said above is totally true, from what I've read on HH's twitter, but on the fox website it says that Bones is returning on March 18th...?