Marcel Taeumel uploaded a new version of ReleaseBuilder to project The Trunk:
http://source.squeak.org/trunk/ReleaseBuilder-mt.163.mcz

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

Name: ReleaseBuilder-mt.163
Author: mt
Time: 17 August 2016, 10:30:43.347 pm
UUID: 0c7a8192-d167-bb4f-b88b-13cfb53f3aed
Ancestors: ReleaseBuilder-mt.162

We have reached a level to entitle the first release candidate for Squeak 5.1.

=============== Diff against ReleaseBuilder-mt.162 ===============

Item was changed:
  ----- Method: ReleaseBuilder class>>initialize (in category 'class initialization') -----
  initialize
  	"We have to be after AutoStart so that Morphic is up and running."
  	Smalltalk addToStartUpList: ReleaseBuilder after: AutoStart.
  	
+ 	SystemVersion newVersion: 'Squeak5.1rc1'.!
- 	SystemVersion newVersion: 'Squeak5.1beta'.!