Wizards of the Coast has announced today that a new set of Commander decks will be available on August 25. Commander (2017 Edition) will feature four new tribal-themed, 100-card decks including 56 all-new cards legal in Legacy and Vintage.
Unlike the previous Commander editions, this set won't focus on the color wheel so there will be only four decks instead of five. The decks will be based on popular tribes, but Wizards didn't reveal which tribes will be featured yet.
If I were to guess, they'll probably feature elves, goblins, faeries, and humans.
Commander (2017 Edition) decks will be released in English, German, French, Italian, Spanish, Portuguese (Brazil), and Japanese, and will have an MSRP of $34.99 (only applies to the United States).
The decks will be available for purchase on Magic Online in November 2017.