| Name | Start | End | Duration |
| Fedora 12 | Wed 2009-05-27 | Wed 2009-11-03 | 154.8 |
| Development Phase | Wed 2009-05-27 | Tue 2009-06-23 | 27.8 |
| Packaging and Development (precedes alpha) | Wed 2009-05-27 | Tue 2009-06-23 | 27.8 |
| Planning Phase | Wed 2009-05-27 | Fri 2009-08-14 | 79.5 |
| Start Feature Submission | Wed 2009-05-27 | Tue 2009-07-28 | 62.7 |
| End Feature Submission (precedes feature freeze) | Tue 2009-07-28 | Tue 2009-07-28 | 0 |
| Testing Phase | Tue 2009-06-16 | Tue 2009-10-20 | 119.2 |
| Beta Release | Tue 2009-07-28 | Wed 2009-09-30 | 56.7 |
| Feature Freeze (depend feature submission) | Tue 2009-07-28 | Tue 2009-07-28 | 0 |
| Software String Freeze | Tue 2009-08-04 | Tue 2009-08-04 | 0 |
| Beta Freeze | Tue 2009-08-04 | Tue 2009-08-18 | 14 |
| Beta Public Availability (milestone) | Tue 2009-08-18 | Tue 2009-08-18 | 0 |
| Allow Pre-branch F13 | Tue 2009-08-18 | Tue 2009-08-18 | 0 |
| Beta Testing | Tue 2009-08-18 | Tue 2009-09-22 | 28 |
| Software Translation Deadline (PO Files complete) | Tue 2009-09-15 | Tue 2009-09-15 | 0 |
| End of Beta | Tue 2009-09-22 | Tue 2009-09-22 | 0 |
| Preview Release | Tue 2009-09-08 | Tue 2009-10-20 | 35.2 |
| Final Freeze: Development | Tue 2009-09-22 | Tue 2009-09-22 | 0 |
| Preview Release Public Availability (milestone) | Tue 2009-10-06 | Tue 2009-10-06 | 0 |
| Preview Testing | Tue 2009-10-06 | Tue 2009-10-20 | 14 |
| End of Preview Release | Tue 2009-10-20 | Tue 2009-10-20 | 0 |
| Launch Phase | Tue 2009-10-06 | Wed 2009-11-04 | 29 |
| Release Candidate | Tue 2009-10-06 | Wed 2009-11-03 | 29 |
| Prepare & Test Release Candidate (RC) | Tue 2009-10-20 | Thu 2009-10-29 | 9 |
| Post & Sync Mirrors | Thu 2009-10-29 | Tue 2009-11-03 | 5 |
| GA Release | Tue 2009-11-03 | Tue 2009-11-03 | 0 |
Version 12 - Created on 2009-Apr-17 with TaskJuggler v2.4.1