Product review (4 stars): You never know what it will look like!
I've added photos of the filters I received on March 11, 2017 (on the left) and November 21, 2017 (on the right), both from Amazon.com LLC (no third party). The newer filter has a double O-ring which required significantly more force to push into the receiver. The end with the "handle" is shaped differently, notably more skinny in the newer filter, and that end of the newer cylinder has more taper, which results in an off-center gap around the filter once installed. Nonetheless, it so far appears to function the same.