We already knew to expect a supplemental Magic: The Gathering product, Signature Spellbook: Jace, in June.  What we didn't know was what (aside from replacing the popular From the Vault series) it would entail.

Now we do.

Wizards of the Coast as unveiled both the packaging as well as the contents of this initial release into the newly-launching Signature Spellbook series.

Here's what WotC says about the product:

Signature Spellbook: Jace is a collection of eight cards plus one random premium foil version of one of those eight cards for the serious blue mage. Each card has Jace-flavored art and special frames just for this set.

As for those eight included cards, take a look:

Signature Spellbook: Jace is expected to release on June 15 and will carry a $19.99 MSRP.  It will be exclusive to Wizards Play Network locations