Based on the female voice actor for Shepard, no new dialog is currently planned for the Extended Cut which confirms as of now it literally will be just new cutscenes to be added to the current multi-colored endings.
http://www.egmnow.com/articles/news/...-a-new-ending/
Also EA is still getting a ton of hate mail for expanding the same-sex relationships for ME 3 and primarily giving the option to make the male Shepard be gay.
http://www.egmnow.com/articles/news/...e-sex-content/
Anyone expecting the rewards from last weekend's multiplayer promotion won't be getting them any time soon after Bioware discovered a significant percentage of people either hacked or used exploits to cheat to get those rewards.
http://lifesanrpg.com/61/mass-effect...owing-exploits
Operation: Beachhead will be the challenge for this weekend.
http://blog.bioware.com/2012/04/05/operation-beachhead/