Substance look and feel history

# Release schedule

- Version 5.3 (Reykjavik) - released 28-Sep-2009.
- Version 5.2 (Quebec) - released 25-May-2009.
- Version 5.1 (Panama) - released 09-Feb-2009.
- Version 5.0 - released 15-Sep-2008.
- Version 4.3 (Nairobi) - released 14-Apr-2008.
- Version 4.2 (Memphis) - released 04-Feb-2008.
- Version 4.1 (Lima) - released 12-Nov-2007.
- Version 4.0 (Key Largo) - released 03-Sep-2007.
- Version 3.3 (Japan) - released 16-Apr-2007.
- Version 3.2 (Iowa) - released 05-Feb-2007.
- Version 3.1 (Honolulu) - released 13-Nov-2006.
- Version 3.0 (Grenada) - released 04-Sep-2006.
- Version 2.3 (Firenze) - released 21-May-2006.
- Version 2.2 (El Paso) - released 27-Feb-2006.
- Version 2.1 (Dakota) - released 12-Dec-2005.
- Version 2.0 - released 04-Oct-2005.
- Version 1.1 - released 15-Jul-2005.
- Version 1.0 - released 30-May-2005.
- Project created on 14-Apr-2005.

# Release cycle

The numbers below are in weeks for minor releases.

- 0 - release candidate of version X-1
- 0 - start development of version X
- 2 - release of version X-1
- 3 - last minor fix of version X-1
- 6 - freezing API of major new features in version X
- 8 - feature freeze for new features in version X
- 10 - feature freeze for user-requested features in version X
- 10 - release candidate of version X
- 10 - start development of version X+1
- 12 - release of version X
- 13 - last minor fix of version X

Each minor version usually takes twelve weeks of development with releases every ten weeks.