They are rolling them out in the next 2 months. I've played with their playground, looked at what they are doing and see little reason to doubt the planned launch will go well.

I think they're making good, solid progress. They should be rolling smart contracts with Gougen in Q2 this year, and indications so far are that they should be on time

Goguen, which is phase 3 of the roadmap and gives smart contracts, is expected to be released in March 2021.

But sure, it's all taking very long.

Native tokens(also part of Goguen) will be released on 1st of March but smart contracts in Q2

4 years of doing it right and academically proven

Cardano project looks pretty much like Hardon Collider in the making

4 years of research & dev. All has come / is coming : - rich metadatas in transactions (done) - token locking (done) - native tokens almost on par with ADA ( on mainnet 05/03/2021 ) - Plutus & Marlowe ( smart contracts ). Testnet in March, mainnet early to late Q2, depending on testnet quality.