Apple today released the mostly bug-fix iOS 10.3.3 update for iPhone, iPad and iPod touch. The software update is available through iTunes and over the air via the Software Update mechanism in Settings → General → Software Update on your iOS device.
To apply it via iTunes, connect your device to a computer via a USB cable, launch iTunes, select your device in the list, click the Summary tab, then click the Check for Update button.
Some of the fixes in iOS 10.3.3 are mentioned in Andrew’s walkthrough video of the first beta.
The company had been testing iOS 10.3.3 since May 16 of this year, following the public release of the iOS 10.3.2 update the previous day.
iOS 10.3.3 should be the last minor update to iOS 10 as Apple continues to test beta versions of the major iOS 11 software update ahead of its public release in the fall.