According to an AFP article: “After two failed attempts in 2006 and 2007, immigration reform could finally be pushed through both houses of the US Congress starting in September, civil rights activists said.”
I think the chances of passage are greater than it was in the last two attempts mainly because: (1) the make up of Congress is more pro-immigrant; and (2) elections will not be imminent. A lot may depend on the economic environment at the time. If unemployment remains at such a high level, CIR is less likely to make it through both chambers of Congress.
We need to reform the current system on so many fronts that the task is daunting. Hopefully lawmakers learned from the last few attempts so a new and improved CIR bill will need less debate and the proposed timing means the issue will be less politically-charged.