BigBlueDodge wrote in post #4820477
The next question I have is when will Sigma integrate OS into the 120-300 f/2.8 ? Also, the Sigma 100-400 now seems like the black sheep in the family, as these lens provide overlap, and better spec's overall. Wonder if that lens is slated for retirement?
They must retire the 80-400mm, this just got replaced big time,
the 120-300mm has to be coming,. now that we see SIGMA moving from "OS Experiments" to "OS Implementation" it will be a mater of time. Given this new set of releases keep in mind, SIGMA is now moving faster with there version of IS than Noink ever did,. how long did the poor Noinkonians have to wait for Noink to finally put there VR onto there serious primes? Like forever and a day!
Anyway, apperently SIGMA has our POTN Memo on there future Road map 
OS 120-300mm 100-300mm f/4 and 300-800mm have to be right around the corner.
There putting it in there most likely biggest sellers first (just as they should)