Entertainment Earth has a pre-order listing for a licensed diecast figurine 4-pack, of Gen1 figures Optimus, Megatron, Bumblebee & Starscream.

They are like the small Titaniums from around 2006, with static poses because they don't have any moving parts.
It is scheduled for release at EE in September... the chances are slim that it will come here, as we didn't get many of their licensed vehicles here.

The price is US$15 for the 4-pack. Each figurine is 6-7cm tall.