|Windows||Standard Installer||Offline Installer|
|Mac OS X||Standard Installer||Offline Installer|
|Linux||x86_64 Offline Installer||x86 OfflineInstaller|
Auto-updates: Everyone who chose "Include me on early releases" on the Settings page
One of the notable changes you may want to take a closer look at is a different approach to upload buffering, which SHOULD improve upload speeds.
This is especially important for "high BDP"(Bandwidth*Delay Product) countries, like Australia, New Zealand, Brazil and users with high internet speeds( >= 50Mbit/s).
But since TCP behaviour is inherently OS-specific and it's almost impossible to test it for all Operating System's builds, if you see any noticable degradation in upload speed after an upgrade to the Beta version(v19.3), please feel free to report it by replying to this message. It would be nice(though not mandatory) if you provide details such as your Country/OS.
The Off-Line Installer for macOS/OS X does nothing (at least under Sierra). The version that downloads and installs works correctly. This has been true for quite a while.