not in the official release. It seems to be a EDN based prototype - see Tienson Qin's tweet about it https://mobile.twitter.com/tiensonqin/status/1589921251480702977
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Tienson said recently that EDN format is just a personal experiment to improve performance and they don't know if it will be made available in Logseq, so I doubt they introduced these WIP Properties 2.0 on a public branch if they depend on EDN.
I highly doubt Logseq will introduce a feature that require you to save notes as EDN.
