http://dulfy.net/2013/08/30/gw2-account-magic-find-ascended-crafting-and-legendary-weapons-revamp-preview/New consumables called Essence of Luck (different rarity levels – purple, blue etc) that you will get from salvaging blues, greens, and globs of ectoplasm. You can consume these Essence of Luck to add to your luck bar which will increase your account wide magic find when the bar is full. It will take more Luck to gain a % as you get higher and higher magic find.
All existing players, to make up for the removal of magic find gear, will be rewarded with purple Essence of Luck that will give you 20% Magic Find by default.
Account wide magic find can also be earned through achievements (no details given)
It will take
2 weeks to craft an Ascended weapon. You will need to be at 500 Artificer/Huntsman/Weaponsmith to craft the Ascended weapons.
All legendaries updated to Ascended stats to be BiS (best in slot). Infusion slots are offensive slots only. They won’t have stats right after the patch but you can immediately pick and choose stats.
Most of the legendaries are updated to have bigger footsteps and flashier effects.
If you wanted to buy a legendary weapon and you haven't yet, Prices for them are probably going to double.