Battle.net announces Blizzard is now accepting preorders of Nova: Covert Ops, their upcoming StarCraft II mission pack bundle. Pre-purchasing all three packs will net a 33% savings. In addition to the discount, this carries an additional incentive: "Those who pre-purchase Nova Covert Ops will receive a unique Nova portrait, as well as a Covert Ops Ghost skin for their Ghost units. The Nova portrait is limited to the pre-purchase bundle, and will be gone once the first series of missions launch." Here are the details from a FAQ on the topic:

• What does the Nova Covert Ops bundle contain?
  • The bundle contains the entire story arc of Nova Covert Ops, which includes all three mission packs and the Covert Ops Ghost skin. Each mission pack contains three campaign-style missions. Those who pre-purchase the bundle will also receive a Nova portrait.
• Can I buy each mission pack individually?
  • Yes, but only the Nova Covert Ops bundle is available for pre-purchase. Individual mission packs will be available for purchase when the first pack goes live in spring of 2016. Each mission pack contains three campaign-style missions.
• Can I get the pre-purchase goodies after the first mission pack is live?
  • The Nova portrait is only available for those who pre-purchase Nova Covert Ops. The Covert Ops Ghost skin is available if you pre-purchase Nova Covert Ops, or own all of the mission packs. Please note: the Covert Ops Ghost Skin will be awarded once all of the mission packs are owned.
• How much will each mission pack cost?
  • Each mission pack will be $7.49 USD, but you can pre-purchase all three now for $14.99 USD.
• When will I receive the Nova portrait and Covert Ops Ghost skin?
  • If you pre-purchase the Nova Covert Ops bundle, you will receive the rewards on or before the release of the first mission pack.
• Do I have to own a version of StarCraft II in order to purchase Nova Covert Ops?
  • No, you may purchase Nova Covert Ops through the Starter Edition without owning any version of StarCraft II.