Given they never published the offical 2007 (or the 2005, 2004, 2003 ....) timetable I doubt you will see it in 2008 either
Someone was nice enough to get us the proof
Strangely bigger isn't it?
The one you can buy is stuffed full of errors and the times in it particularly on the Belfast route don't match up with the actual timetable.
Despite what IE claim there is no public consultation on the service needs of rail users its more a case of this is how it is going to be and there is nothing you can do about it