General
Character limit
Diablo 4 is expected to have 10 character slots. This is the same number that Diablo 3 launched with.
Core Stats
Classes benefit from the four attribute types different. There's multiple ways to increase attribute points.
Cutscenes
Real-time cutscenes will feature your unique character's look inside Blizzard's famous cinematics.
Difficulty tiers
There's at least three World Tier difficulties, each offering progressively harder gameplay.
Excluded features
While Diablo 4 has tons of new features, it won't have everything, like fishing and player housing.
Max level
The max character level in Diablo 4 is 100. Players invest in skills from 0-50, and the Paragon Board from 51-100.
Progress tracking
Challenges
Challenges are the equivalent to Achievements from Diablo 3. Players get a unique title for each Challenge.
Leaderboards
In addition to a "top players" list, Diablo 4 will feature a multitude of fun and challenging leaderboards.
Renown System
A system to benefit players for thoroughly exploring a region. Benefits include skill points.
Season Journey
The Season Journey gives players new objectives each Season, and rewards them based on level of completion.
Titles
Titles are rewards for completing Challenges. They have a prefix and suffix, for creating combinations.
Appearance
Armor dye
Any Armor piece can be dyed. Fabric, leather, and metal materials all react differently under lighting conditions.
Customization
Characters can be customized more than ever, with different body sizes, eyes, hair, tattoos, and scars.
Transmog
Transmog allows players to alter an item's look, but keep its stats the same. Salvaging unlocks transmog.
Wardrobe
Players can customize the look of items using transmog and pigment dyes in the Wardrobe feature.
Detailed & customized characters
Blizzard said that one of its goals with Diablo 4 was to allow each player to create and play the fantasy character that they've always dreamed of, whether that's a big-boned Barbarian with tattoos or a slim-form Necromancer with multiple scars. Diablo 4's character models are extremely detailed, and they'll not only be used in the game, but also in real-time cutscenes. Players can also better track their character's progress, with systems like Challenges (i.e., achievements) and Leaderbards.