I picked this up from listening to some presenters on newstalk and rte, they are young 30 something's. It's a new contrived Dublin accent it's not the "dort" or south Dublin accent which is now infamous, it's slightly working class but definitely contrived with all the rougher bits taken off, "I'm gooodth" rather than "I'm good", but it has a different timbre to the true blue Dublin accent with the voice rising towards the end of sentence which the Dublin accent doesn't have. I've noticed Claire McKenna on news talk and Gavin McLaughlin the business editor with independent definitely have it.