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SMT development? Is that rumor still kicking around? Should come online in 2024?

Well they have been putting out an update on their SMT development each week:

https://steemit.com/steem/@steemitblog/smt-development-update-4

The testnet is expected to launch around mid-January.

Still a long ways to go, but it may not be as much fairy tale as we originally thought!