900 mhz and wimax

Does anyone know if the 900 spectrum is going to support wimax. Almost all of our gear is 900 Mhz and I want be able to offer a wimax ready solution to my clients. I have read that it is only going to be within the 3.5 and 5.7 Ghz spectrum, if that comes to be, does anyone know of any technology that can be intergrated into the network with the 900 series AP and SM’s to enable wimax?