UPDATE - On Aug. 11th, 2011, Wizards revealed all fifteen cards in From the Vault - Legends. Learn more here!
The fourth release in the From the Vault series, today Wizards announced "From the Vaults: Legends" to be released on August 26, 2011. It is following in its predecessors footsteps with a limited print run and should be expected to fetch quite a high price. It features one interesting note, "[f]or some cards, it is their first time with a black border."
This appears to be a further offering from Wizards aimed at the growing Commander community, following the upcoming Commander product to be released later this year as part of the "Summer of Multiplayer."
The art provided is clearly of Teferi, Mage of Zhalfir meaning we have only 14 more cards to find out!