I'm not too sure, as I haven't played on the test realm, but the following come from the patch notes for 1.2. From the look of it, it seems like they're trying to make the PvP reward system more user-friendly.

PvP Changes

• PvP vendors no longer sell Champion Bags.
• PvP vendors now sell the Recruit set, a new entry-level PvP set (for level 50 players), for credits.
• Battlemaster PvP vendors now sell Battlemaster gear pieces for Warzone Commendations.
• The Valor Rank requirement has been removed from Battlemaster earpieces and implants.
• New War Hero PvP vendors can be found on the Republic and Imperial Fleets. They sell the new War Hero and Rated War Hero PvP sets for Ranked Warzone Commendations and the equivalent Battlemaster piece.
• The Warzone Commendation cap has been increased to 2000 (up from 1000).
• Level 50 Warzone daily and weekly missions now reward Warzone Commendations.

Ranked Warzones

• Level 50 players can queue solo or in a group of up to 8 players via the Queue Solo Ranked and Queue Group Ranked buttons in the Warzone Queue Window.
• Players are rewarded Ranked Warzone Commendations based on performance; these Commendations can be used to purchase the new War Hero PvP gear.
• Players with high ratings can purchase Rated War Hero gear and vehicles. Rated War Hero gear has the same stats as War Hero gear, but has a more prestigious appearance.