"Revised headlamps" refers to headlights that have been modified or changed in some way. It means that the headlights have been adjusted or updated to improve their design or functionality. Full definition
Finally, the last change up front are the slightly revised headlamps, which now have a flat inner edge and a redesigned LED strip inside the lens. (topspeed.com)
Besides a new gearbox, this new model will also be receiving some interesting cosmetic updates like sporty alloy wheels and revised headlamps along with modifications in the cabin as well. (rediff.com)
Larger air intakes in the bumper and revised headlamps complete the new front fascia, while the rear end boasts a set of refreshed taillights with new graphics and a more pronounced bumper. (topspeed.com)