gear stats are +500HEM again, top weapon ratios go from 5:1 to 6:1 ratio for damage/delay. group gear gets fero8, and HoT T2/3 raid clickies. so those are nice utility/dps upgrades.
UI/bag changes, visual timer countdowns on spell gems/AA hotkeys will remove a lot need for some current plugins, but i can only imagine the structure is going to get massively screwed and require a lot of love to fix.
10 hotbars with 12 keys per + resizable buttons and bars. UI can hold a lot more stuff in a lot less space with a custom ui.
guild tools are awesome. you can change permissions to 1 of 7 tiers or so, allowing even lowest level in guild to say plant banners or not talk in guild (lol).
AAs are high in cost, low in total, currently. there wont be much more added, but youre looking at maybe ~1300 total, with most costing 10+. clerics got some nice new stuff, knights got some bonus hate stuff, rest got some standard dps boosts, wiz got a magic based ethereal, some other utility type stuff for everyone. theres a new glyph that costs 25AA that appears to be a PHer.. was hoping to see like 40 new glyphs with random fun items.
spells/discs are nearly identical copy and pastes to higher level for most classes with everyone getting 2-3 new things i think.
zones look really nice, there are some bugs to be worked out as expected. all in all it looks to be a nice expansion for the game interface, and another quickly completed from an AA/spell gaining point of view.