Awoken Legend Set is a Digital Deluxe edition exclusive, it can only be obtained by buying the Digital Deluxe edition, you won't be able to get it any other way. Cayde's Exotic Stash is a pre-order exclusive and can be obtained by pre-ordering any version of Forsaken, but will not be obtainable in any way past Forsaken launch, it will not be released at a later date, free or otherwise.