There is a new programmable PWM led driver FW1906 that support six LEDs per pixel. It is used in RGB+CCT LED strips. It would be great to add support for it to WLED.

Support for that chip was added recently to NeoPixelBus. So it requires to bump version to 2.7.6 and use new features RgbwwColor & GrbcwxFeature.

There are some more information here.