DDR4 is on the horizon. It is faster, more power efficient and will employ higher capacity memory chips. There was plenty of DDR4 memory technology at the show matched with yet to be announced Intel processors. It was rather amusing to see the memory but not be able to see the processors that were kept under wraps.
SODIMMs are being used in more than just laptops and embedded devices. Intel's C2000 is compact and often paired with SODIMMs.
There was some audio technology at the show as well.