What's the "een" in Halloween?
1967, from noun phrase (1910), earlier status of the art (1889). The phrase itself was in use from mid-19c.
The latest; the very newest and most advanced: Many of the escort services are so state-of-the-art that they make Toner's look primitive
[1967+; found by 1889 in the form present status of the art, which anticipates the modern use]