Good article on the rise in US airstrikes in Iraq. In in the first quarter of 2007 we dropped as much as we did in all of 2006. Sounds like we are preparing to get out.
Let me add one thing. If we're going to increase sorties during a civil war context we need to do two things. Pick a side and brutally suppress the rebels. We aren't doing either. I'm guessing but it sounds like preparations to leave. More on this later.