You can enable new UI using WiNG CLI. Use the following commands to enable new UI:
vx9000 > enable vx9000# vx9000#conf
vx9000(config)#management-policy default vx9000(config-management-policy-default)#nova vx9000(config-management-policy-default)#commit write memory OK vx9000(config-management-policy-default)# vx9000(config-management-policy-default)#