yes, wifi is working with the boot.img from the release.
but when i compile the source of linux 15.07 and flash the board with compiled boot.img,
then in that case wifi is not working and i am getting following error logs.
[ 1.886374] wcnss: IRIS Reg: 0x51120004
[ 1.915908] subsys-pil-tz a21b000.qcom,pronto: Direct firmware load for wcnss.mdt failed with error -2
[ 1.915988] subsys-pil-tz a21b000.qcom,pronto: wcnss: Failed to locate wcnss.mdt
[ 1.924247] wcn36xx-msm: probe of a000000.qcom,wcn36xx failed with error -2