Rank 40 upgraded rewards

I have read in many places that once you reach Spartan Rank 40 the rewards are supposed to be silver packs instead of bronze, but so far this has not happened for me. I am level 46 and I am still receiving bronze packs. I am just wondering if anyone is having the same issue of not receiving the upgraded REQ rewards, or if this is even true or maybe it was a misprint in the Prima guide people online keep referencing.

I think you get 1 silver pack at 40, and the rest are bronze coloured but I think you can still get rares out of them ?? Most of the time my ranks up packs are better than the commendation packs I get.

Or I could be mistaken and am going crazy, I don’t really pay attention because I just get crap armour for all my permenents. As I stated in my other topic… 50 customisation compared to 20 weapon/vehicles/power weapons.

Once you reach 40 u get a silver, then it keeps going bronze until whenever someone higher than a 47 can tell me what I get at 50