In some ways, the set could have been named "3rd Version" or "Final Version". There's four subsets in the set and two of them are continuations of the 1st and 2nd Version sets. There's a nine card "1st Version Update" subset that features several players (well, nine actually) who for whatever reason did not appear in the 1st or 2nd Version sets this year. There's four foreign players who signed midway through the season - Cody Satterwhite of the Tigers, Carlos Peguero and Felix Perez of the Eagles and Elian Herrera of the Baystars. There are also four players who "graduated" from being ikusei players this season - Hiroki Kondoh of the Dragons, Satoshi Sonobe of the Buffaloes and Ryo Hirai and Yoshinori Satoh of the Swallows (the latter three were all returning to their team's rosters after being development players briefly). The final player was Kazuki Kondoh of the Swallows who was traded from Orix mid-season. Obviously unlike the "Update" subset from the 2nd Version set, there's not an equal number of cards per team. The cards are numbered 601 to 609 (which is where the 2nd Version set left off).
The other subset that's a continuation of something from the earlier set is the nine card "Ceremonial First Pitch" subset. Seven of the cards feature the usual actress/model/gravure idols that are pretty standard for these cards - Ayama Goriki, Manami Hashimoto, Ami Inamura, Moemi Katayama, Ruriko Kojima and Sumire (Matsubara). Goriki, Kojima and Inamura have been featured in previous "First Pitch" subsets - Goriki in the 2015 2nd Version bonus cards with SCM #113, Kojima in the 2nd Version sets in 2014 and 2015 and Inamura in the 2nd Version set this year as well as bonus cards from SCM #113 and #120. The other two cards are for retired players - Hisashi Yamada and Isao Harimoto. I think this is the first time that there's been a "First Pitch" card of a former player since Hiromichi Ishige in 2007. The cards are numbered FP14 to FP22, again in continuation of the cards from 2nd Version (FP01 to FP13).
All the cards card be seen at Jambalaya.