Change record status: 
Project: 
Introduced in branch: 
8.0.x
Description: 

Before

These body classes have been removed:

html
front / not-front
not-logged-in / logged-in
in-maintenance

Classes based on theme suggestions:

page-node
page-node-
page-node-$nid

After

The body classes listed above have either been removed or replaced with the following:

path-frontpage (if on the frontpage)
path-$path (first part of the path: path-admin, path-node)
user-logged-in
maintenance-page (existing class to use instead of in-maintenance)

Impacts: 
Themers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other: 
Other updates done