“And it might be that it is sooner than we think that there is a market and we need to be able to provide central bank digital currencies.”
The comments struck a curious note with many, coming just months after Carstens emphatically advised against issuing such digital currencies. In a speech in March, he listed various risks for banks considering doing so, arguing innovation should not come too fast.
I think that the BIS's vision is entirely different from what this article is trying to suggest.
Their stance is probably still quite anti-decentralization, given their obvious affiliations with the world's central banks all over. Which means that what they are probably focusing on are blockchain projects (presumably, ones on a national scale) that utilize blockchain technology to facilitate faster international settlement, which is one of their primary functions.
I don't necessarily think that their stance has shifted significantly on currencies like bitcoin. While the article makes it seem like that they are eyeing BTC as potentially a reserve currency in the future, they are likely referring to some central bank issued digital currency. I.e., reserve accounts, except cryptographically secured.