The Premium Expansion Packs include all Expansion Packs and DLCs besides the Premium Tracks, and is designed to complement the Premium Track Pack into what is effectively the equivalent of the 2020-2022 Season Pass.
The Premium Expansion Packs includes all Expansion Packs and DLCs with the exception of the 5 Premium DLC Tracks (Hockenheimring, Silverstone, Nurburgring, Spa-Francorchamps & one TBA), and is designed for users who may not have interest on those tracks or already acquired them individually or via the Premium Track Pack - buying this pack & Premium Track Pack is equivalent to owning the 2020-2022 Season Pass.
Currently, the pack offers the Racin´ USA Expansion Pack (all 3 parts), of which Part 1 and 2 are already available.