The Oura Ring 5 has been released, with some outlets comparing it favorably to its predecessor, the Oura Ring 4. The new ring features upgrades and is considered a significant development in smart ring technology, with some reviewers suggesting it is a game-changer for fitness tracking. The Oura Ring 5 is available for purchase, with a reported price of $399, although its value and suitability for different users are being debated.