Does anyone on here have any ideas on if the German government will allow colleges to reopen there?
That's not a matter for the federal government nor for the single universities; rather, the decision lies with the federal states. And they simply wait and see. It is far too early to expect definitive information, everything depends on the further development in the respective state. Here in Bavaria, just now the decision has been made to hold the rest of the summer semester completely online and without teaching in the class room. No official statements with regard of the winter semester so far. My university (in Bavaria covid-19 is a much bigger problem than in, say, Sachsen-Anhalt) is currently saying that we should be prepared to do again at least some of our teaching online during the winter semester.