On my Macintosh, I received a notice that there is an updated version of Java v8 update 71 build 15 (released on January 19).
I called the US Patent Electronic Business Center (EBC), and the representative I spoke to said that this version has NOT been tested with their systems, and that the representative suggested delaying the upgrade.
Update: On January 25, I called the EBC and the representative said that we can use the upgrade. NOTE -- I had troubles accessing the USPTO website after the upgrade. I was experiencing excruciatingly long load times for the Java applet. However, once the applet ran successfully, subsequent loads have been fast.