That does not sound correct.
The 2013 Rockwood Ultra Lite / Mini Lite / ROO brochure shows it as standard for all 3 products "LED 12 Volt Interior Lighting". Halfway down on page 14.
Of course at the top in small print it also says "Standards & Options are subject to change."
Might depend on what 2013 unit / serial number they first applied that to if you looking at a unit on the lot.
But I would think you would be OK if you're ordering new, and the dealer should be able to get confirmation.
Fred, Gail and Sandee the Puggle
2008 Pathfinder, Native Ultimate 14.5, Delta 10
2012 Rockwood 2503S