The Wave 2 of TFPrime Legions figures noted 2 posts above have now been sighted in America, along with Wave 2 BotShots single figures.

Plus, more of the single-packed Legion/Legends figures have been found in small-chain stores in America. Hasbro have been doing random Legion/Legends figures in these single packs for about 6 years now, in plain packaging (currently using Generations colours), as cheap toys for stores that don't stock a full range of toys. This latest set has the Reveal the Shield Optimus & Starscream, and Universe Gen2 Megatron and Bumblebee (in colours closer matching the TRU exclusive 4-pack).
These aren't likely to be released here, as previous single pack figures never were.