DICE has announced a double XP session and a limited chance to get a previously unavailable piece of in-game content in the form of a M1911 pistol scope which was previously limited to Battlefield 4 developers. Why all these give aways? To say sorry for the rocky launch that the large scale FPS title has had across all platforms.
The official post from the Swedish developer outlines their plans and dates for the Double XP and how to claim your pistol scope.
To show our appreciation for your patience as we work through these issues, we are announcing that from November 28 through December 5, we will reward all players with Double XP for every multiplayer match they complete. We understand that the launch issues may have impacted your progression, and we want to do everything we can to help you get back the XP that you may have lost. Also, to cap off the week, on December 5 we will give all players that log in to Battlefield 4 multiplayer a M1911 pistol scope. This special sidearm scope, previously reserved for our DICE developers, has a 3X zoom and is available for all classes in Battlefield 4.
You can read more detail at http://blogs.battlefield.com/2013/11/bf4-player-appreciation/