But I assume generic is together with RPi one of the earliest ones.
But thats sounds already really promising. I read so much about the already quite reliable pre alpha builds that I expect to start then directly with the alpha.
By the way, regarding this Kernel question. I asked Digital Devices and they told me in 4.14 all cards beside modulator cards are included. So this means LE and DD C2T2 will work most likely ootb.