While exciting, please note that they only were able to record a photoelectron spectrum and back this up with a lot of theoretical work, which is far from a conclusive proof of identity. Right now we know they made some yet-unknowm boron compound with a very weird, symmetrical, photoelectron spectrum... but imo the information density in these spectra isnt super high.

Without a mass spectrum (telling you at the very least that they made a pure compound of 80 boron atoms) or even better a bulk synthesis route (extremely difficult, but giving you an amount of compound you can actually look at & investigate further) this should be filed under "tantalizing discovery but no definitive proof of existence".

I'd love to be proven wrong tho in my scepticism because this is one exciting molecule.