Hi,
There is a new firmware v5.01 for HikVision NVR's with a new revamped v5.0 GUI.
It is only available for M-series, I-series AcuSense (only (E) revision) and DeepinMind M-series of NVR's.
it is confirmed by HIK that other (lower / older) versions of NVR's will not receive this new UI...