The AOO 4.0.1 release is a micro release which is a maintenance release to fix critical issues and/or security fixes and potentially support further languages.
Proposed Release Schedule
...
08/05 - 0809/30 06 bugfix and stabilization, no feature development
08/05 - 09/06 translation
08/26 - 09/06 13 bugfix verification and regression testing on related areas
09/09 14 - RC1
optional 09/16 - RC2
proposed 09/19 GA
09/20 GA25 - actual GA (vote tally on RC3)
10/01 - announcement
Detailed Release Planning
A more detailed release planning can be found under AOO 4.0.1 Feature PlanningTask List
Release Notes
The related release notes can be found under AOO 4.0.1 Release Notes
...