Some extracts of Eurogamer's article (today):
"Microsoft reveals loads of indies developing for Xbox One"
Microsoft required exclusivity, timed exclusivity or at the very least launch date parity for Xbox 360 games - but it has confirmed it is willing to work with developers on a case-by-case for games that have already released on other platforms when it comes to Xbox One.
"We do not require exclusivity agreements. However, we do ask for day one parity with other console game platforms," a Microsoft spokesperson told SavyGamer.
"In instances where games have signed a timed exclusive with another platform, we'll work with them on a case by case basis."
The question was raised today after Microsoft announced the list of developers approved for self-publishing on Xbox One as part of the ID@Xbox program. On the list are developers working on games for Xbox One that have already released on PlayStation, including Iron Galaxy's Divekick.
If you want to read the rest of the article: