Marcel Taeumel uploaded a new version of ReleaseBuilder to project The Trunk:
http://source.squeak.org/trunk/ReleaseBuilder-mt.207.mcz

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

Name: ReleaseBuilder-mt.207
Author: mt
Time: 28 February 2020, 2:28:15.257195 pm
UUID: 892206e4-0670-1243-ae83-f66bfbff7888
Ancestors: ReleaseBuilder-mt.206

Bumps Squeak version to 5.3rc3 --- Yay! :-)

=============== Diff against ReleaseBuilder-mt.206 ===============

Item was changed:
  ----- Method: ReleaseBuilder class>>initialize (in category 'class initialization') -----
  initialize
  
  	QAndA ifNil: [self clearQAndA].
  
  	"We have to be after AutoStart so that Morphic is up and running."
  	Smalltalk addToStartUpList: ReleaseBuilder after: AutoStart.
  
+ 	SystemVersion newVersion: 'Squeak5.3rc3'!
- 	SystemVersion newVersion: 'Squeak5.3rc2'!