Unexpectedly,
Keysight released a new version (E36100
B) in the past month.
I didn't look in details, but beside the obvious black front panel, there is some tightening of the ripple specs.
Output ripple and noise (20 Hz to 20 MHz)
36100AVoltage RMS 350 µV 2 mV 4 mV 5 mV 15 mV
Pk-Pk 10 mV 30 mV 60 mV 100 mV 150 mV
36100BVoltage RMS 350 µV 0.8 mV 1.2 mV 1.55 mV 2.5 mV
Pk-Pk 8 mV 15 mV 20 mV 30 mV 40 mV