Referendum on the 8th amendment.
Based on the recommendation of the Attorney General to the government, it seems now that the choices on the ballot will be either to:
a) leave the amendment as it is
or
b) repeal it and replace it with a provision explicitly giving the Oireachtas power to legislate on the issue.
The current train of thought seems to be that the legislation would permit abortion on request until 12 weeks.
The main sticking point seems to be the issue of abortion on request (unsurprisingly), with abortion for other reasons (fatal foetal abnormality, threat to the life or health of the woman, cases of rape or incest) not looking as contentious at all.
The campaigning is going to be brutally ugly I'd imagine, and I wonder how it will turn out. There seems to be a sense among some pro-choice campaigners that the result of the same sex marriage campaign is an indicator of this referendum too, but I'd be wary of relying on that.