RM-1099 remains relatively unknown in the sea of new Lumia devices, Microsoft seems to be preparing. In upcoming Lumia devices, RM-1062 and its brethren that may come as Lumia 1330 and Lumia 1335 and RM-1072 and its family of variants have been seen elsewhere too.
We are trying to extract more info about RM-1099 and will keep you updated.