Proposals for more devolution for Scotland are likely to be unveiled within the next fortnight, but they are unlikely to be implemented before the general election.
The SNP denounced the move as "empty promises" and said some Calman Commission proposals on devolution will end up being binned.
The commitment to "take forward" proposals in the final report of the Calman Commission was included in the Queen's Speech. The UK Government plans are likely to be published in a White Paper in the next two weeks.