Game Informer’s next issue is focused on Sword & Shield and to celebrate, they’ve been allowed to release various bits of information about the upcoming games, Pokémon Sword & Shield. 

• They have revealed reveals that autosave is in Pokémon Sword & Shield, but it can be turned off if you do so wish.
• They also confirm that HMs do not return in the game.
  
• Pokémon cut from Sword and Shield’s National Pokédex will return in the future.
  
• Sword And Shield’s Max Raid Battles Could Be Among Pokémon’s Most Challenging Encounters
  
• They also reveal that EXP Share is automatic, without the use of an item in Pokémon Sword & Shield. It’s currently unclear if it will be able to be turned off.
  
• The interview implies more aspects of a Pokémon, previously left to breeding (hinted as “a personality parameter”) will be changeable in Pokémon Sword & Shield
  
• There will be 18 Gyms in Pokémon Sword and Shield, spread across a minor league and a major league.
  
• Update (October 3rd, 2019): Game Informer have received a follow up from their original article about the Gym statement reported on October 1st. With this, they state that they were told that there will be a similar amount of gyms to battle as prior games, but some do change between version as seen with Bea’s Fighting-type Gym in Sword and Allister’s Ghost-type Gym in Shield. In the game’s lore, however, there are 18 across the leagues. 

Sources: Serebii | Game Informer