They don't appear to have been extended yet. Expect a Statutory Instrument to be signed today. It needs to be published in Iris Oifiguil which issues (online) on Tuesdays and Fridays.
It will also be published on Irishstatutebook.ie but this is NOT a legal requirement and has no formal legal standing.
It will also be announced via press release on the Dept of Health website with a link to the text of the Statutory Instrument. Needless to say, a press release has no official standing either.
I might be a bit pedantic about this, but it's criminal legislation after all and it should be done properly. Especially when it puts such huge powers into the hands of the Gardaí.