Sword of Azeroth

You can read the full article here but I thought I’d draw attention to the guild changes:

Guilds

• Guild talents and guild currency has been scrapped. Guilds will automatically receive perks and bonuses for leveling up (there are 25 levels), but there will be no guild talent trees. Boss kills, winning battlegrounds and similar activities will accrue XP for your guild.
• In place of a currency system, guilds will gain rewards by completing guild achievements. Once a reward has been unlocked, you will purchase them with gold. Rewards include unique tabards, mounts (carrying your guild’s battle standard) and heirloom items. Once a guild has earned an achievement, it will never go away and the rewards they bestow will always be available. The achievements will be very comprehensive, covering even classic/legacy raids. To earn a guild achievement in a raid, a 10-man raid must have 7 players from the same guild. A 25-man raid needs 20.
• Players will be able to gain reputation with their guild, much like you would with a group like the Argent Crusade. You gain reputation for participating in dungeons, battlegrounds or completing guild achievements. The top end guild rewards will require Exalted reputation, and is on a per-character basis. You’ll need to grind up your guild reputation even on your alts. You do not lose all of your reputation immediately after leaving a guild or being kicked. If you’re quitting (or being kicked) for a joke, you won’t lose all of your hard work
• The guild UI has been overhauled. The UI will display your guild’s XP bar, an upcoming events section with a feed of your guild’s calendar events, an RSS feed of your guild’s recent events (boss kills, rated battleground wins, et cetera), your character’s guild reputation bar, and your recently gained perk.
• The guild roster will contain profession information for each player, and you can view their recipes even when they are not online.