After numerous reports of issues on the current version of iOS running on iPhones, Apple is finally working on iOS 10.3 update. Developed under the codename ‘Erie’, the new update will be the 8th one after the company first released the iOS 10 about 4 months back with iPhone 7. 
As per the report by Forbes, iOS 10.3 will bring a new ‘Theatre Mode’ which will be just a tap away with a Popcorn shaped icon placed in the Control Centre. Though there is not much information about this new mode, however, as per the series of tweets from Sonny Dickson, Theatre Mode will be Apple’s version of Dark Mode with additional options. Basically, this mode will dim the display on your iPhone and will mute audio and notifications as well. As the name implies, the Theatre Mode will be ideal if you are watching a movie in a movie theatre or watching a play in an auditorium. Not only this, the mode can also block incoming calls or messages and disable haptic feedback during the movie hours.
Interestingly, Apple might also include an automatic Theatre Mode enabler based on your GPS location. However, we don’t think it will make it to iOS 10.3 update. Further, as per Dickson, the update will be out for developers to test on January 10th which will then be followed by the public release.
As mentioned above, iPhone 6S along with other versions such as iPhone 6 and 6 Plus has recently been the victim of Battery Gate issue which would unexpectedly shut down the iPhone when the battery level would reach 30%. Hopefully, iOS 10.3 will bring the fix for this issue along with other improvements and bug fixes.