Masternodes will roll out with the release of the Vault 3.0. We had to change tact at approaching this project as outlined in last official update https://bitcointalk.org/index.php?topic=951753.msg23602283#msg23602283. This does not mean we restarted from scratch though. We have been able to apply most of the work already done to the new approach and the new path is one with less challenges to completion and therefore achievable on a far quicker timetable. Alex is testing and working out some minor issues presently and overall we are making very good progress. We are trying to get some more specific timeline estimates for the community and will do so as soon as we can.