The Irish times confirm the venue name change here:
https://www.irishtimes.com/business...c-venue-as-three-takeover-finalised-1.1916455
and mention a rebranding event next week on Wednesday September 10th, but at that stage, the new venue name should be known.
Nothing yet from on the promoter who has handled Morrissey's recent gigs in Ireland, Aiken Promotions,
www.aikenpromotions.ie may have some additional information tomorrow, or the next few days.
Also, information here on buying tickets for all events at the O2 Dublin through O2 Priority tickets, usually for a Friday public onsale, one would be able to buy pre-sale tickets around 48 hours in advance(of public sale) by use of a code. If you know anyone who currently uses an O2 phone in Ireland, they can get you this code.
http://music.o2online.ie/Tickets
I find this good for getting standing tickets, but any seats I have bought on it have not really been good seats, they tend to be towards the extreme right or left of the stage.
I did try in the past using my Irish O2 phone for UK O2 venue events, but it does not work
Finally, on the day of any event at the O2 Dublin, if you have standing tickets, and you are an O2 Ireland customer, you can avail of whats called "Priority Access", which means you get to go into the venue first, in a seperate lineup to the general Q. An O2 Ireland customer can bring in 3 additional friends. I availed of this once before, but it did not make much of a difference as I was in top 5 people in the line anyway. It's not very fair as those who lineup up early, and who are not O2 Ireland customers will in theory, be relegated in the Q, but thats a perk they can offer because of buying the naming rights to a venue.
They also check your number, to verify that the mobile has an O2 Ireland account.
Details here:
http://music.o2online.ie/Access