The Bumblebee 3-pack is being noted as an Amazon exclusive like the other two Tribute toys, and is now in stock there for US$60. (the other two Tribute packs - Leader Optimus for US$80 and 2-pack Optimus at a great price of US$30 - are also still available)
It is supposed to be the wave 3 Bumblebee toy... which we aren't likely to see here.