Detailed reports on what they have done can be found here. A few randomly selected items:
The Diocese of Down and Dromore won an award for its website.
Archbishop Eames announced his retirement in the course of his presidential address (and here is comment from the Belfast Telegraph)
The synod considered Windsor Report 2004: A Further Response which can be read in PDF format here.
The report (again in PDF format) on the Anglican Consultative Council may also be of interest.
You may also be interested in what the Irish bishops have said on alternative episcopal oversight.
http://www.irishangle.net/news/modules.php?name=News&file=article&sid=363