FreeBSD: Part II

From the FreeBSD FAQ:

                  2.0
                   |
                   |
                   |  [2.1-stable]
  *BRANCH*       2.0.5 -> 2.1 -> 2.1.5 -> 2.1.6 -> 2.1.7.1  [2.1-stable ends]
                   |                            (Mar 1997)
                   |
                   |
                   |  [2.2-stable]
  *BRANCH*      2.2.1 -> 2.2.2-RELEASE -> 2.2.5-RELEASE -> ...
                   |       (Mar 1997)      (Oct 1997)
                   |
                   |
                3.0-SNAPs  (started Q1 1997)
                   |
                   |
              3.0.0-RELEASE (Q1 1998)
                   |
                  \|/
                   +
           [future 3.x releases]