I think the temporary capture of antiprotons and antielectrons has been achieved before
You are correct. For example the Fermilab Antiproton Source, which creates antiprotons and stores them, has been in operation since 1985 [1], while the Fermilab Recycler has held onto a continuous stash of antiprotons for over a month [2]. And these are by no means the very first machines to capture and store antimatter, I'd have to dig though the history a bit more to find an earlier example.
Production of Anti-hydrogen (antiproton orbited by a positron) seems to have been achieved in 1995 at CERN, with Fermilab confirming production in 1997 [3]. But those atoms were destroyed immediately after being created, this is the first time I've heard of anyone successfully storing anti-hydrogen for any long period of time. So yes, the headline is misleading, we've been capturing antimatter for quite some time, it's the fact that you are capturing the neutrally charged anti-hydrogen (antiproton -1, positron +1, total = 0) that's the real news.