i have the same issue. binary gets validated and submits successfully. submit for review and after a while, and without notice, it moves to "Invalid Binary." Looking at the details under "Prerelease" is not helpful. There is no indication, other than a yellow triangle icon with a ! in it, as to why it is invalid. It even lists the "Binary State" as validated. I did notice the file size is only at 5.70 MB when it should be much larger. It submitted through XCode successfully, but given the file size, I figured maybe there was an error during upload. So I uploaded again...
Side Note: had to increment the build version because there is no way to reject the invalid binary.
After uploading again without errors I submitted the app for review. It was in the waiting for review state again, and again without notice it moved to invalid binary state. Again the file size was 5.70 MB. Exact same errors and file sizes for a completely different app I tried to submit. This is incredibly frustrating. Glad they decided to "upgrade" iTunes Connect in time for Friday!