They added a boost of 1.5 from 10-midnight for me for downtown only. I guess to try and curve the surge. However, I had just taken a trip all the way out to Great Falls and had UberX trips all the way back into DC until I got back into the downtown at 11:42. It was still surging over 1.5 between 10-11.
I had 1 trip from 7-8:30 on Uber and 2 trips on Lyft. Wasn't busy for me until after 9:30 when I restarted after dinner plans.