I would expect Hasbro to release Skywarp and Thundercracker at some point, even if they didn't win the fan-votes, Hasbro could just claim that Astrotrain and Blaster were released first because the fans wanted them first.

The same happened with the Generations fan-vote in February 2018... Impactor and Mirage won, but we've already had two of the other four released/announced.

Impactor vs Mirage (released in Siege as a 3 pack, and in the main line)
Spinister vs Wheeljack (Spinister released in Siege, Wheeljack in Earthrise)
Needlenose vs Tracks (both claimed to be in Earthrise)