is not a secret new patch from Game Freak. It’s a fan-repackaged, decrypted version of the final official update data, intended for emulators and modding. If you’re a casual player on original hardware, stick with the official eShop update (Ver. 1.5). If you’re a modder or Citra user, this release saves you the hassle of decryption.
You usually install the update separately. Open Citra, go to File > Install CIA , and select your decrypted 1.4 update file. The game version in your library should then reflect "1.4." Pokemon Alpha Sapphire- Update 1.4 -Decrypted- ...
Necessary for any online trading, battling, or accessing the Pokémon Bank. is not a secret new patch from Game Freak