Mass Effect 3 has been having weekend events to promote ME3's multiplayer and to reward gamers for playing. These promotions are currently only available for the PC and the Xbox 360, despite the game being available for the PS3. BioWare says Sony is to blame for the lack of PS3 love.
EA community manager Eduardo Vasconcellos wrote on the official BioWare blog:
"Unfortunately, we are not yet able to offer our Multiplayer Challenge weekends on PlayStation 3. Sony has not yet approved the promotion."
"We continue to work with them to find a compromise, but until then, Sony will not allow us to run the same Multiplayer Challenges on the PlayStation 3 that we run on Xbox 360 and PC."
Until this issue is resolved, PS3 ME3 fans will not get to participate in extra XP events or receive the rewards that come with the promotions. This weekend's promotion is Operation Resurgence, an event centered around the latest piece of Mass Effect 3 multiplayer DLC, the Resurgence Pack. If you play a match on one of the new maps you'll earn 10% more XP. Anyone who plays this weekend will also receive a Reserve Pack, which unlocks one of the new random alien classes.
Hopefully this is just a paperwork issue that can be easily resolved. This is definitely a set back for anyone who is ME3 on the PS3.