If you want the skinny see this ( some bits arent up to date , never mind that comment about WOW mechanics , thats not correct

- ESO is set during a time period where not much lore has been set , all the lore ties in to the TES universe , the TES loremaster is regularly met with by the team
The Elder Scrolls franchise has an enormous body of backstory, and ESO is blowing it out even further. Zenimax Online is working hand-in-hand with the loremasters at Bethesda Game Studios to flesh out Tamriel’s Second Era, so lore nuts should have plenty to digest. " - game informer
- They announced it will only have a sub fee for a few months and will then be free to play
- Bethesda are still making single player TES rpg's , TESO is zenimax's projectand it doesnt upset the lore or universe in any way
- ?The open world PvP is only in Cyrodill , not the rest of the world , there are ALSO instanced PvP grounds as well
they also eliminated lowbie camping
Remember the good old days of open warfare in the Hillsbrad Foothills as huge mobs of players fought over Tarren Mill and Southshore? Expand that to the entire province of Cyrodiil. Take out the server-crashing lag, since the engine can handle up to 200 players onscreen and Zenimax Online has still-under-wraps plans to divert excess population. Forget about lowbie ganking, since everyone’s stats are automatically boosted to level-cap status in Cyrodiil. Oh, and there are things to fight over besides murdering helpless questgivers. Like, for instance, keeps whose walls you can bash down with trebuchets.- game informer
- 3 v 3 PvP system " you can team up with one side against the remaining third faction" which means their is no language gap , you are not forced to attack just because your not in the same faction.
- It is not using the hero engine ( strangely the only thing everyone's up to date with
)
- They are making sure there is no PvE trinity such as healer , dps and tank , your not pigeonholed into a role
- they are not splitting 2 different gear types i.e. PvP PvE gear