I haven't seen much buzz about Cyber Monday this year. I'm not surprised.
It seems to be a remnant of when people didn't have the best internet connections at home and had to shop online Monday at work. Now people tend to have great internet connections at home, so it isn't worth getting in trouble at work to shop.
Most retailers are just running online sales starting Thurdsday. (In past years, many of the sales wouldn't go up at all until Monday. No Thanksgiving or Black Friday online shopping at many places.)
There may be a few more deals added on Monday, but most of it is just going to be continuations of what went up on Thanksgiving.