After the Galaxy Note 3, now it’s time for the Samsung Galaxy S4 jump over to Android 5.0 Lollipop in Russia. The update weighs in at a hefty 1.05GB and has restrictions for the internal storage.
So you will need around 3GB to complete the update, so you may need to move some things to a microSD card. After the install completes it will consume 950MB of the storage. This is because of the ART. It compiles your apps the first time you boot your phone and stores the result.
So, if you have a Galaxy S4 go ahead and check out for updates from the settings menu.