Marcel Taeumel uploaded a new version of System to project The Trunk:
http://source.squeak.org/trunk/System-mt.906.mcz

==================== Summary ====================

Name: System-mt.906
Author: mt
Time: 22 August 2016, 10:50:20.661793 am
UUID: 7cd19e60-bb61-c142-8458-1414adbde9a9
Ancestors: System-mt.905

Small fix in system version to determine feature freeze.

=============== Diff against System-mt.905 ===============

Item was changed:
  ----- Method: SystemVersion>>isFeatureFreeze (in category 'testing') -----
  isFeatureFreeze
+ 	^ self isAlpha not and: [self isRelease not]!
- 	^ self isAlpha not!