Nothing new from MD on the Explorer NEW but as you will have picked up elsewhere MD have ditched their armed 540F variant in favour of sticking to the existing 530 products and an as yet undefined development of the MD600 without NOTAR.
Six months on from the HAI Heli-Expo launch of this project there is nothing new. Simply a paint job. The conversion from [space marginal] HEMS to Law Enforcement is simply paint the words on the side and hang a few turrets in the 'corners' regardless of the likely C of G issues. This is probably as far away as the 540F was.... if not further.
On other matters I am still looking for the elusive NPAS fixed wing. Nothing yet registered in the UK [G-POLX?] and no signs of OE-FAH the Austrian version locally either.