In the meantime, work is progressing through a number of Department of Work and Pensions fora in order to better understand the potential effects of the changes for Wales.
Yn y cyfamser, mae gwaith yn mynd rhagddo, drwy gyfrwng amryw o fforymau'r Adran Gwaith a Phensiynau, i ddeall yn well yr effeithiau y gallai’r diwygiadau eu cael ar Gymru.