http://www.ecat.lighting.philips.com/l/lamps/led-lighting-systems/led-lamps/master-ledlamps-dimtone/61147/cat/
The lamp, Master LEDlamp DimTone LED lamp, have an unique feature: Its light color (2700K) gets warmer when dimmed (Exactly like incandescents and halogen lamps).
I don't know for what this unusual feature was made, because LED lamps are expected to remain at their same color temperature when dimmed (Their advantage over incandescent and halogen lamps).
I also don't know how this feature could be applied to a LED lamp.

Apparently for those who like the temperature shift of incandescents

The lamp probably contain less phosphor and few red/amber LEDs. When dimmed, the circuit is made to dim the blue LEDs down before the red ones