IIRC the commission for aviation regulation set the required pax figure for DUB to build the parallel runway and new long haul pier at 25.5 million, so a 2% growth next year looks like it will be enough to meet those requirements. Busy few years ahead.
25 million for the runway, there won't be any pier construction before 2019 determination at the earliest. Will be closer to 30 million+ before a new runway is built and operational. EI and IAG won't support a new pier been build before then either.
AFAIK a new planning application will be submitted in the coming months for the runway.