People all seem to assume that the endings in the Extended Cut are all changes that take place from the moment Sheppard jumps into the beam. Well, on Bioware's FAQ page for the DLC, they state:
What save game should I load to play the Extended Cut?
[SPOILERS] After completing Mass Effect 3, a 'Legend' save is created prior to assaulting the Cerberus Base. To experience the Extended Cut DLC, load this save game and play through to the end of the game. The Extended Cut endings will differ depending on choices made throughout the Mass Effect series, so multiple playthroughs with a variety of different decisions will be required to experience the variety of possibilities offered by the new content.
So that's what I did, sorta. I couldn't find this new save file they're talking about, but I started from a save right before I went to Cerberus HQ. I saw several things that I *think* were changes, such as new dialog from TIM in the recordings on the computer consoles. Also, some additions to the cut scene where you call all the fleets in to the final Earth battle.
But as I've stated elsewhere, it's been 3 months since I last saw any of this, so my memory is fuzzy.
I just wanted to create this thread where people can mention changes and additions they noticed before the point where Sheppard enters the beam...