Various manufacturers, websites, and so forth have started using 1600 lumens as a comparison baseline. This is the approximate lumens emitted by a new 100 watt 120VAC incandescent light bulb.
Manufacturers have effectively ceased making and selling incandescent bulbs larger than 60 watts. Some special purpose incandescent bulbs, such as severe service, are still available. However, these and lower wattage bulbs are scheduled to be phased out as well.
(Major manufacturers probably already have plans in place to close their incadescent factories and transition them to CFL And LED bulbs.)
Obviously, it's hard to see how bright a 100 watt bulb is if you can't find one. Fortunately, most CFL and LED packages state, "Equivalent to 100 watt incandescent bulb. (Or, XX watt bulb.)
Some manufacturers have already transitioned to simply listing lumens on their packaging and websites.
BTW, automotive (12VDC) incandescent bulbs should remain available, largely due to how NHTSA regulations are written. Cost of these will likely rise due to decreased demand as motorists shift to LED lights.
