Purely anectodal data points:
I flew on both Tuesday and Wednesday, 2 segments each day.
No bump opportunities, and my last segment was zeroed out due to 2 flight cancellations earlier. My flight wasn't even over or even full after that happened.
UA agent told me loads were really light out of PHX on Wed, traditionally a very busy day.
AC AAgent told me the same thing at DFW on Tuesday.
Again, purely anecdotal data.