The IRS only had technical difficulties on April 17. During that time TurboTax still had uninterrupted service and was available and accepting e-filed returns. As soon as the IRS began accepting e-filed returns again we sent them everything that had been submitted in the "down time".
If you e-filed after that day, everything was up and running fine. Double check your email now and let me know if you still haven't received any email updates. From what I can see on my end, you should have received an update by now.