I finally got the long awaiting for LEXUS START+ GENUINE LONG RANGE REMOTE ENGINE STARTER installed from my dealership (Ottawa/Gatineau Region) on my:

Canadian, Lexus 2018, NX 300, with Executive Package, manufactured date: 03/18.

Part Number for the remote on the invoice is: PK5A0-78JSM, LONG RANGE RES

The long range remote works as expected (800 Meters), and both OEM fobs got activated and also work as expected (30 Meters).

 

The Long Range Remote Starter will be available (listed) for the NX 2018 and 2019 on the Canadian Lexus web site under Accessories this February. Enjoy.