If you see it's available, then to download it, use a Wi-Fi connection. This will now search for the latest G930FXXU5ESD2 software. Otherwise, go to device Settings > Software Updates > Download Updates Manually.
So, if you have the patience you can wait for it to knock in automatically. This is an incremental rollout that will reach the users gradually all over the globe. The software is based on Android 8.0.0 Oreo. It brings the May 2019 security patch along with Performance improvements. This upgrade is making it's way over-the-air with build number G930FXXU5ESD2 and CSC is G930FVFG5ESD3. Download Firmware G930FXXU5ESD2 : A new software update is now seeding for the latest Samsung Galaxy S7 for Country / Carrier Germany (vodafone) VD2 And More other regions.