Only a matter of time until they are powerful enough!
Its all about heat management. Unlike incandescent, where waste heat is found in the beam, LEDs need to have the heat moved out by direct contact (think heatsink) as it does not exit in the beam. Also, their performance plummets as the junction temperature rises. So, it's all about pumping up the power while keeping things cool.
Hummmmm... I'm picturing an S4 with a plug and water hoses
