EP votes its opinion on the opening of the IGC in July (10-12)
Commission presents its opinion probably 10 July
Formal opening of negotiations around 23 July
Finalising debate with European Summit 18/19 October 2007
Ratification until summer 2008 (Ireland already indicate that it would hold its referendum in spring 2008)
I hope that at least ratification will be synchronised within early 2008, so that there is some momentum of a European debate in particular in view of the referendums which will take place anyways.