MR is not going away as some had feared, but it has lost momentum and will not receive any further major enhancements or improved cloud-compatibility with regard to GP.
Microsoft’s decision to offer an Excel-based reporting tool for Dynamics GP, courtesy of Jet Reports, gives customers a new option beyond Management Reporter
"Once we went live with Dynamics 365, we saw massive improvements throughout. We're going to achieve more, because with this system there are so many opportunities to grow."