As of writing, the full set of Pokémon allowable under Regulation Set E has not been released, though it is safe to assume that all Pokémon currently allowable under Regulation Set D will continue to be allow under regulation set E. This means that Trainers will continue to be able to use any Pokémon numbered 001-398 in the Paldea Pokédex that have been are caught, hatched, and obtained as gifts in either Pokémon Scarlet or Pokémon Violet, as well as select Pokémon and Regional Forms that have been brought from Pokémon HOME. It is expected the full list of eligible Pokémon should be available in roughly two weeks, shortly after the global release of The Teal Mask on September 13th.
Apart from the addition of these Pokémon, Regulation Set E is otherwise unaltered from the previous Regulation Set. Pokémon may be entered at any level, but will be set to level 50 during matches. Pokémon may also be given Held Items, however no more than one copy of any item can be present on a player's team. All battles will be limited to 20 minutes total, including 7 minutes of time per player, with Turn Time and Preview Times of 45 and 90 seconds respectively.
- Sources
Advance Notice: Regulation Set E
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