it's been more than three months since Mass Effect 3 was released with an ending that caused one of the biggest backlashes from gamers upset over the ending. Whether it was starting a charity fund to push for a change to the ending or a cupcake protest, gamers were pissed at the ending, and wanted to make sure that they were heard. As a result of that outrage, BioWare said they were going to expand on the ending via DLC, and that DLC is coming out on June 26th.
Mass Effect 3: Extended Cut will have additional cinematic sequence and epilogue scenes to give more insight on what the hell happened at the end of the game. The DLC will be free to download on the PC, PS3, and Xbox 360.
In preparation for the Mass Effect 3: Extended Cut release, BioWare released an audio interview with Executive Producer Casey Hudson, Lead Writer Mac Walters, and Community Manager Jessica Merizan.
Source: Official Mass Effect site