To improve the reliability and stability of the FMC ADC 100M, some components need to be changed.
It solves the problem that some capacitors are not enough derated in their operating voltage (and this has indeed given troubles by capacitors that became resistive after a few years of operating). See Issue 66.
Secondly it solves the problem that the LDC had an output capacitor that had in the end a too low capacitance. The reason is that the used capacitor has a much lower capacitance than specified if it is used at a lower operating voltage than it is specified for. See Issue 65.