There will be a new studio but not till April. I presume we'll get a new virtual set in the same studio until then.
I wouldn't be confident there will be news on all theee channels in the longer run. Certainly I'd expect hat there'll only be one 5:30pm bulletin, on TV3, and that only one of News at 8:00 and the what is currently the 10;00pm Ireland Live will remain.
Incidentally Ireland live is currently scheduled to continue to run until 30th December at least.
If they could get away with no news they probably would. The only reason that they introduced that 8pm Bulletin was because all the new shows they made for that spot spectacularly tanked and once they were taken off there was nothing to replace them. The day they got back the soaps, the 8.00pm Bulletin was thrown off TV3 and onto 3e. Not something you do if you believe in News and your News coverage. The funny thing is that the only shows that retained their Pre 2015 audiences during the last two soapless years Were the 5:30 News, and Vincent Browne. They were the most watched shows on the channel most weeks... If you exclude Judge Judy.
I would assume that the BAI would have something to say about dropping any more bulletins at this stage. They were Burnt a few years ago when they allowed TV3 to stop their Weekend News service because TV3 management said that they couldn't afford it. However, when things improved economically for TV3 in 2013 and 14, the News service did not return.
However, TV3 has New owners and some new management so perhaps this time things will be different but I won't be surprised if efforts are made to get rid of some News at some point and the lack of License Fee money will be used (as well as evil RTE, etc, etc)