We've been on 4.4.1 for 2 month. Wanted to let people know that the reload times have DRATICALLY dropped. We have 3100 devices with some 39,000 services. 3.14 reloads were taking 20 minutes and would increase a minute or two a day until we restarted opsview. Now we are at 4 1/2 minutes without restarts! The new system is generally faster and there are some nice additions to the user interface.
We just configured the Mobile app and people are really pleased with the access from iOS. The Android version works fine but could use some display improvements compared to the Apple version.