Many classes from previous titles in the series will be available, with 19 in total. Etrian Odyssey X also has a new job titled "Hero". Additionally, the Break/Boost system from Etrian Odyssey 2 Untold seems to be making a return, as well as the expanded character creator from Etrian Odyssey V. You can also select from portrait artwork used in previous games.
Atlus also touts that Etrian Odyssey X will feature the largest number of maps in the series. More information will come in this week's Famitsu magazine.
It remains to be seen if Atlus USA will localize this title. It's worth noting that Etrian Odyssey V launched in English more than a year after its Japanese release, and Etrian Mystery Dungeon 2 released in Japan last year with no localization announcement as of yet.