I just received this in my inbox. Thought you might be interested.

We proudly present a series of brand new white LEDs

WHITE LEDs based on ZnSe technology. These ZnSe LEDs emit white light without blue LED conversion YAG!

how it works:

ZnSe LED chips emitting two colors at the same time, one peak at 484 nm (blue) and one peak at 605 nm (yellow) - mixing these two wavelengths inside the epoxy housing "generates" white light:

http://www.roithner-laser.com/

http://www.roithner-laser.com/All_Datasheets/Pricelists/