Today at DTW the Lufthansa 747-400 is back after several months of just the A340-300. I don't know if this was just a special overloaded flight today or if this will be a regular thing. Unfortunately British Airways is still only using a 767-300 and haven't gone back the the 777 or 744.
I also saw something else unusual at DTW today.
I know Apple Vacations flies A320s out of DTW, I saw one take off around 8am, but I didnt know Apple flew 757-200s there though. I saw an Apple or was it JMC 757 take off around 4:45pm on Runway 22L. All I know was that it was a 757 with the bright green tail.