I'm a gamefreak employee and work mainly on character designs. Currently, our team is divided into two projects: Pokémon Legends ZA and the 10th generation games. Generation 10 (so far named Pokémon Olive and Sage), the project to which I'm assined, is far into development and all new Pokémon have already been designed, with most missing few details like names and pokédex descriptions (most are missing those). I've compelled a list of all new pokémon planned for generation 10 with all the information I could add from the sourcecode and creative teams:

https://docs.google.com/spreadsheets/d/1QbndcddK_rjIVJaxYpDTTBKb-UfBmASB1cxxuuM_mkM/edit?usp=sharing

> Gen 10 is based on Brazil
> Late 2026 release
> I have very little information on what Legends ZA is gonna look like since I'm assigned to the secondary development team focused on gen 10. I do, however, know over 20 new megas and forms are planned for its release - a few of which will be shown at worlds 2024.
> all info is definitely not final and is more or less subjected to change.