alt Hacker NewsFor the most part yes. JWT is a part of JOSE. For most things CBOR, think binary JSON.
I love me some CBOR, but Carl isn’t very adventurous in deviating from JSON (rightfully!) so I don’t expect a lot new in COSE if you have worked with JOSE.
Other than the tagged data types, the main inconpatibiiiry in CBOR to JSON is that CBOR map keys can be integers and in JSON must be strings.
CBOR and COSE are pretty bad formats. The original "rationale" for CBOR was that messagepack didn't distinguish bytes and strings, which was added around ~2013. Afterwards CBOR was changed up a bit from messagepack and became a decidedly worse format. And COSE just goes against every other principle of well-engineered crypto, but that's not particularly surprising giving it is a JOSE derivative.
A good zero-order classifier for "is this signing format a dumpster fire" is whether the spec mentions canonical encodings.