You can now download Android 5.0 for Galaxy S5 just 31 days after Google pushed Android 5.0 Lollipop to AOSP. The update is currently only available in Europe OTA but can be installed manually if you live in the United States.
Due to the ART run time, 5.0 with TouchWiz might be the fastest Android version Samsung has ever put out making your Galaxy S5 even faster then it already was. There are currently different ways to install and download Android 5.0 LRX21T for the S5.
Bellow we provide links to different sites that allow you to download the update which has PDA G900FXXU1BNL2 file name G900FXXU1BNL2_G900FXEO1BNL1_XEO.zip
The last method is the easiest one but might not yet be available in your country as Samsung is slowly rolling out the update. If you do know it is available, you can head over to Settings > System > About Device > Software update > Update where you will be able to upgrade your Galaxy S5 from Android 4.4 to Android 5.0