Update: PKHeX has been updated yet again to version 17.01.31, implementing further improvements to overall system stability and other minor adjustments have been made to enhance the user experience.
The previous update 17.01.30 features few minor improvements and bug fixes, as detailed below.
The previous update 17.01.28 brings in support for migrated Virtual Console and previous-Gen Pokemon, through Bank, into Sun and Moon.
According to the Japanese Pokémon Global Link website as reported by Serebii.net, thousands of people (5,954 to be precise) have been hit with bans from Online Play (Game Sync, Battle Competitions, Rating Battles, Global Missions).
Banned users will see error code 090-0212.[1,2]
The Pokémon Company has announced that they will continue their pursuit against people with edited save data.[1,2]
We urgently recommend not going online until we have more information on how these bans were triggered.
The latest Pokémon Bank update has been released. Those who have Pokémon Sun and Pokémon Moon can receive Mewnium Z, a Z-Crystal exclusive to Mew. Additionally, Pokémon Transporter has been updated to support transferring from Generation 1 virtual console games.
Transferring Pokémon from generation 1 virtual console games will come in a separate update for the Pokémon Transporter.
In related news, @SciresM did some data-mining and found the text for Pokédex entries, which can be read below: