it would be great if LS was going to release them! but as you remember it's been some time they have announced those two with the new logo, but nothing in sight...
They don't have interior-lighting. You need to buy the interior-lighting - kit to insert it and connect it to the upper-parts of the bogies, that's why they wheels have metal contacts attached to the ends of the axle-boxes, as well as the contacts attached to metal-strip / and or parts on the chassis, such as to make and keep electrical-continuity with the lights, when installed.
Probably ESU is the best brand I think for Innenbeleuctung / interior-lighting.
Adelardo, do not forget to "loosen" the metal strips because they grip the wheels too tightly and that creates unwanted friction when you pull a long rake.