There is new spCountryCode field in LightRequest/LightResponse that includes what was previously temporarily included in CitizenCountryCode as the two meaning field. This has been already implemented but under different name originCountryCode so the only change is to rename originCountryCode to spCountryCode.
There is a new field RequesterId in LightRequest
There is a new field Consent in LightResponse
New code requires to use and also uses xml namespace lin LightRequest and LightResponse
New version od CEF eIDAS Node 2.5 has been released https://ec.europa.eu/cefdigital/wiki/display/CEFDIGITAL/eIDAS-Node+version+2.5 and there is some work that needs to be done to align with this. Here is the list of changes after analysing migration guide.