Samsung promised to update the Galaxy S4 to the latest Android 4.3 Jelly Bean and now the company has reportedly released the upgrade for the LTE (GT-I9505) version of the smartphone.

The Samsung Galaxy S4 is one of the hottest smartphones currently available on the market and fans are eagerly waiting for the Android 4.3 software update.

The latest Android version brings a number of new features to the smartphone, including the much-touted support for Samsung's Galaxy Gear smartwatch. In addition, the update will also bring Samsung's KNOX security suite to the Galaxy S4, as well as support for Open GL 3.0, Bluetooth 4.0 Low Energy (LE) and other neat things.

According to the folks over at SamMobile, who first reported on the update rollout, the Samsung Galaxy S4 Android 4.3 Jelly Bean update details include the following:

• OpenGL 3.0 support
• Support for the Samsung Galaxy Gear smartwatch (via Bluetooth LE)
• TRIM Support, which should make the smartphone significantly faster
• ANT+ Support
• Samsung KNOX (complete with KNOX bootloader and dedicated app)
• Better RAM management
• Pre-loaded Samsung Wallet
• Better TouchWiz launcher, now with less lag
• Enhanced Display color reproduction, allowing for sharper visuals
• New Samsung Keyboard
• New Samsung Browser with full-screen mode by default, as well as new tab interface and more
• New Camera firmware
• User Interface tweaks to the Contacts app, Flashlight Widget, dialog boxes and more

Samsung Galaxy S4 users can check whether the update is already available for their device either by accessing the settings menu on the smartphone or by connecting to a computer via Samsung KIES. The update is reportedly available only for the Galaxy S4 with model number GT-I9505 for now, i.e the LTE version. It remains unclear at this point when the other versions of the smartphone will receive the update.

Google has recently announced the upcoming Android 4.4 KitKat as well, but has not detailed yet when the update will become available. This means that the Android 4.3 Jelly Bean is the latest version of Android for now. Galaxy S4 users in other countries may be happy to know that SamMobile has a live feed of when the Android 4.3 update will roll out for the Galaxy S4 in various countries.