Fake news. The Pope, in fact, rejected the German Bishops plan
Why did the pope want his alleged disapproval to remain a secret?
At this point why would anyone believe that Francis "in fact" rejected something against the Catholic Faith?
It is much more likely that this "rejection" is fake.
Besides, "St" JPII's 1983 Code of Canon Law already allows for non-Catholics to receive communion. That post-Vatican II door was already opened.