different software has different levels of authorization
some healthcare companies develop software that is regulated by the fda - if they make a major code change, it has to go through testing/validation by their IT, Quality, & Regulatory departments, then has to be approved by the fda via a 510k submission. the FDA has 90 days to approve it (and they normally take most of those days). If they have any questions that need to be answered by the developer, the 90 day approval clock starts over, giving them another 90 days to approve. obviously this isn't fda regulated software, however I believe Sony and Microsoft both need to give their blessing before anything's released.
this also isn't a pc game like ootp or the mogul series where a developer can work all weekend to release a patch, only to realize that the patch creates a bunch of other problems. you should see the baseball mogul support forum for examples. i think Adam intimated that they have ONE shot to get this right because any patches after the 2nd one would take directly from their ncaa 2010 budget dollar wise and man-hour wise.
personally i'd rather wait to make sure they correct as much as possible in one patch. the season doesn't even start until late august and i don't get into madden much so i won't have to split time between the two games but i realize (as they do i'm sure) that many people play both games.