Announced today:
http://www.dublinbus.ie/en/Network-Direct/Network-Direct-Phase-1/
Looks like the 39 is no longer going through Blanchardstown shopping centre and is following a more direct route into town if I'm reading it correctly. Some promises like "10 min frequency or better on four core routes(37, 38, 39a, 17a)" but when you open up the details, you see 10 mins as best frequency with the 38 having a 20 minute frequency so they seem to have misunderstood the phrase "or better". More orbital services and most buses are now terminating on Leeson street rather than Hawkin's street.