We will certainly have an answer in 2016. Boom or bust
Why?
Assuming the likely case that the second IA look results in "carry on", then one must wait for the final number of events. Given this would be twice as many as at the 2nd look, it will likely be about a year later.
PPHM which knows the enrollment data and events-to-date is penciling in the second look for mid '16. As such, the final will almost certainly be well into '17