As a ZBrush 4R7 owner I'm really looking forward to the 4R8 update. Its main features are:

• a conventional gizmo as an alternative to the Transpose line;
• realtime Boolean operations;
• LazyMouse improvements, such as angle snaps, and seamlessly continuing a stroke with the same depth as the previous stroke;
• 3D alphas (Vector Displacement Maps), for advanced 3D brushes.