Wizards of the Coast once again expanded the set by adding non-holographic and holographic versions of the rare cards. However, two of the holographic cards in the Japanese set (Butterfree and Beedrill) were released as non-holographic cards only in the English set.
The only two non-holographic rare cards that were not duplicates were Espeon and Umbreon.
As with Neo 1 in Japan, Neo 2 had a 9 card promotional set - five of those (Espeon, Umbreon, Unown E, Unown N, and Unown O) were added to the English set. Two became Promotional cards (reverse-holographic Pichu and Entei), and one was never released in English (a reverse-holographic Charizard). Eevee, a reprint of the card in the expansion, also was not released in English. The characters represented by the three Unown cards spell out "NEO".
They also spell out "EON", the suffix shared by all of the Eeveelutions.
Dark Raichu made its official Japanese debut in Neo 2 (as a super rare); it was first produced as a Wizards of the Coast exclusive card back in Team Rocket.