Operating system: Ubuntu 18.04
Graphics card: AMD RX580
2.80 (sub 43), branch: blender2.7, commit date: 2019-01-31 21:41, hash: 8a51af7d1c98, type: Release
For those modelling with precision, the viewport grid units serve as scale/guide/reference. Currently it's very hard to determine scale when zoomed in close to an object. This was present in 2.79.
The image attached has different zoom levels but it's impossible to tell which one is smaller than the other.