Everyone should be aware of Loot 2.0 and Paragon 2.0 by now, but there are some small changes that you might not have picked up on. I'll start the list and hopefully I can get some help here.
- There's an option to display an icon to indicate the type of item for loot on the ground.
- Break everything, I mean everything. You'll be surprised by what can pop out of a table.
- Normal (white and gray) items can be salvaged for common debris.
- You can jump to any waypoint on the map at any time, you don't have to be at a waypoint to jump to another one.
- You can dye legendaries.
- You can compare your achievement progress with other players by clicking on their achievment link in chat.
- Diamond gems provide Resist All.
- You can teleport directly to a player by right clicking on their portrait.
- Player hitboxes have been normalized and are the same regardless of gender.
- Most have seen a performance improvement in the game. Your mileage may vary.
- Gold costs for many things have been reduced such as repairing items and combining gems.
- Holding CTRL while mousing over an item will show you the min/max values for every stat.
- The staff of herding can no longer be upgraded and any version of it will open up the pony level.
- Certain skills can be used over walls.
- Commas!!!! (Sarcasm)
- Paragon levels now give you Paragon points that you can spend from the character details window.
- If you have completed all the quests you can reset them all and redo them with the new loot 2.0 rules including the rules of first kill. Note that all first kills do not guarantee a legendary item however it appears the Skeleton King does. Also note that once reset they cannot be reset again until all quests are completed.
- Pool of Reflection gives a 25% experience gain boost for half of your current level or until you die, whichever comes first. Mousing over the xp bar will show you how much of this xp boost you have left.
- Shift-click on a players name to see details about that character.
- TAB will bring up the level map while M will bring up the waypoint map.
Finally I'll leave you with this link which gives a good overview of all the changes.
Help me out here people and thanks!