the 2020.2 release notes talk about a suiteApp that will integrate AMEX Corporate card expenses with expense reports. see https://5463907.app.netsuite.com/app/help/helpcenter.nl?fid=section_159122395131.html&whence= however I can't find where to download it? Am I missing something? Anyone else looked into this and found out where to install??

Have a look at SuiteAnswer Id 95160 which should give you information on how to install the app