The Welsh Secretary will call for the Assembly to become 'a full Parliament with tax raising powers' when he speaks in the Senedd later. He'll call for politicians to end the 'continuous debate about powers' and instead focus on 'delivery and real change.' But the UK Government's plans for Wales have been criticised as 'second rate' by Plaid Cymru.
Stephen Crabb's first speech to AMs could also be one of the last because he's expected to announce that the Wales Bill will abolish 'the outdated requirement for the Secretary of State to address the Assembly and hold a seat in the chamber.'
A seat is available in the Senedd chamber for whomever occupies the rôle of Welsh Secretary although traditionally they've only used it to update AMs on the Queen's Speech.
When he appears in the chamber later, Mr Crabb will tell AMs that 'devolution is not an endless journey' and that 'it is time for the 16-year continuous debate about powers to end and for the Welsh Assembly to become a full Parliament.'
The UK Government's plans will be set out in a Wales Bill which is due to be published in the autumn. The proposals will be based on those agreed in cross-party talks known as the St. David's Day agreement. You can find details of what was agreed by clicking here.
But while Stephen Crabb calls the Wales Bill a 'fundamental rewriting of the devolution settlement,' others are more suspicious.
The First Minister has criticised the lack of detail and the lack of talks between the two governments over what could be included. He's also warned that the Assembly has the power to veto any plans that AMs don't believe are in the best interests of Wales.
Plaid Cymru calls the UK Government's proposals a 'package that treats Wales as second rate.'
Leader Leanne Wood says the indications are that the Bill will 'fall short of what the people of Wales expect and deserve.'
Stephen Crabb will make his comments in a debate in the Senedd chamber on the Queen's Speech which is due to begin at around 2.15pm.