Uh, why are you guys treating the random information and rumours in that Xbox magazine as an official source?
That entire article is just reporting what was said on N7 Day - it mentions no new interviews with Bioware people, no internal sources, etc. They don't know any more than we do.
Nobody, anywhere, has talked about running out of oxygen outside the Mako or "hundreds of hours" or "many cities per planet". The alien races speculation comes from a fan panel at PAX 2013 that's a year and a half old, and we don't even know if the original source was accurate. OXM is not a legitimate source if the source they're using is wrong, or if they're just adding in random rumours among some genuine stuff from N7 Day. This is exactly how bad information spreads around.
I don't mean to sound passive aggressive, but people who come to find new information are going to read your stuff, and read sourced information from OXM that could be entirely wrong. Given the problems this series has had with developers promising things that weren't in the final game, I hardly think it helps to add to that by including rumours in a list like this. Especially when you're putting it under "Dev Promises" and treating the list like it's verified information. Most games media websites are becoming ridiculously bad at reporting accurate information, so I'd be extremely skeptical about including anything that's not released by Bioware itself.
(OXM had an interview with Bioware before DAI's release and still managed to get half the details wrong, which led to fans getting excited about locations and features that weren't in the game, which led to a whole bunch of unhappy people when someone from the dev team had to clear up the situation.)
*If* OXM had gone to Bioware to do an interview and this was an article about it, then I'd have absolutely no issues with putting anything they reported into a list of known features, but that report is just summarising another video, and a lot of it sounds blatantly incorrect. At best, the stuff that didn't come from N7 Day deserves to be moved to rumours, but I suspect none of it is accurate anyway.