Yes. I'm also blocked by this.

More info. It appears that people that have upgraded Xcode, and people that have not, are both having their binaries disappear. Simply because "bitcode" and "Upload your symbols" we checked. That's it. That's the big bug. It was fine until iOS 14 dropped. This is affecting everyone. Only binaries that turn off those things are going through. So is this an Xcode bug? Or a backend processing bug? That is for Apple's engineers to find out. What we need is a quick "BUG ALERT" button at the bottom of App Store Connect - that makes it easy to report important things like this to Apple.

It is not related to updating Xcode. I have not updated and I have the same issue. It's an issue with App Store Connect website. Perhaps there is too much in the queue for uploads and the extra ones (ours) are just not added. Or it's a bug added when the apple team made changes for handing/transitioning to iOS 14. They sometimes forget that one little thing that makes the entire site work when shifting to a new version of iOS. They often have hiccups for a day or two. Whatever it is, it's MAJOR CATASTROPHE and developers can't use TestFlight or upload binaries for App Store releases. This issue was noticed after work around 5pm and it's midnight now and still an issue. I just need testflight, but imagine those poor devs that have emergency uploads because Apple suddenly sprang IOS 14. I can imagine how extremely unhappy they are right now.