This update is delivered via internal (Sparkle) updater that was finished in previous build.
Right click on Bongiovi DPS Menu Bar icon -> Bongiovi DPS Preferences -> Messages (Tab) -> At the bottom under Software Updates -> Check for updates.
The only thing that I have to report is that Sparkle updater window is always on top and partially covers installer window and covers reboot prompt, for example.
The updater works. I updated without problems. However, under latest developer/beta build of 10.11.4 I sometimes get glitches when streaming videos/listening to music via Spotify. It began happening under previous build as well. However, I realise I am using beta build of OS X. Apple might have done some updates between 10.11.2 to 10.11.4 Beta.
Good work so far.