More detail on the LMXT here. Like the A330 MRTT, will be built as an A330 first in one plant (2 years) then converted to a LMXT in another (further 18-24 months).
Also, will have a permanently fitted Aeromed suite.
Lockheed's Plan To Bring Its Version Of The Airbus A330 Tanker To America (Updated) (thedrive.com)