I compared a 4.0.0alpha1 install to a 3.10.0 install.

Settings that are missing on 4.0.0alpha1:

settings/override/viewcache.ini.append.php:

ClearRelationTypes[]=common
ClearRelationTypes[]=reverse_common
ClearRelationTypes[]=reverse_embedded
ClearRelationTypes[]=reverse_attribute

settings/siteaccess/eng/image.ini.append.php and settings/siteaccess/ezwebin_site/image.ini.append.php:

[AliasSettings]
AliasList[]=logo

[logo]
Reference=
Filters[]
Filters[]=geometry/scaleheight=36