A major change aimed at getting more transplant organs for people who desperately need them finally became Welsh law today.
The First Minister said it was the most significant legislation ever passed by the Assembly - and the Health Minister claimed that it was a momentous day.
But it seems Wales might not be quite ready for the organ donation system - as it won't be implemented for another two years.
Richard Morgan reports.
It has been a long journey and it is very good law. It received proper consultation and first class scrutiny all the way through.
It gives hope to all those waiting for a transplant, not only those on the list but those who fear chronic organ failure and who may need a transplant.
I am proud that we were at the forefront of making our views known and we thank all those involved from all political parties and especially the Bill Team and the Government for getting us through over the line.
The debate was detailed and produced an Act which the Assembly and Wales can be proud and will now be a marker for other parts of the UK
This is a momentous day in the history of the Welsh Government and I am proud to have been the Health Minister in post when this seminal piece of legislation came into being.
Although we celebrate the commencement of the Act today, it is important to remember the new system will not come into force until 1st December 2015, following a two year public information campaign.
During this two year campaign, people will be given plenty of information on how the new system works and what their choices are.
Even today though people can help others by ensuring their loved ones know their wishes about organ donation and I would encourage everyone to have that conversation.
The Welsh Government will today announce when legislation on a 'soft' opt-out system for organ donation will come into effect here.
It means everyone will be presumed a potential organ donor - unless they have specifically stated that they wish not to be.
The Human Transplantation (Wales) Bill hasn't been welcomed by everyone, but ministers hope it will increase the number of organs available for transplants.
The Bill was passed by the National Assembly on July 2, with 43 AMs voting for, eight against and two abstaining.
It makes Wales the first UK nation to introduce such a system.
The Bill will also receive Royal Assent during a special ceremony today.
A two year publicity campaign is to follow a change in the law in Wales on organ donation. The Assembly has agreed that people should follow an opt-out policy rather than an opt-in one.
Campaigners have hailed an historic vote in the Assembly last night. AM's voted to change the organ donation law in Wales meaning in future people will have to opt out. But Dan Boucher of the Christian social policy charity CARE says the law is not welcomed by everyone.
A historic day for #organdonation in Wales: Assembly votes in favour of progressive Human Transplantation (Wales) Bill.
AMs have passed the Organ Donation Bill Wales. There were 43 AMs who voted for the bill, eight voted against and there were two abstentions. From now on, patients will have to opt out of being an organ donor.