Please note:
As of today, 1.1.14 is no longer the stable branch of SMF, as SMF 2.0 is being released as we speak. 1.1.14 will remain in maintenance stage, and it will continue to be supported for security and major/critical functionality fixes, only it will not receive new features, nor minor bug fixes or improvements.
How long days you maintain 1.1.14 
Give me your plan please.(same as OS software style?)
Today, we maintain 3 branches of SMF: 1.0, 1.1 and 2.0, for security and major/critical functionality fixes on supported platforms.
At some point we intend to drop maintenance for 1.0.x (stable released in 2004) - please note:
1.0, not 1.1. That old branch is STILL maintained as of today.
The intention as of now is like this:
- we will announce the start of the process, for 1.0 forums, and 1.0 forums will have at least 6 months (or more) to upgrade from that moment, until that branch (1.0) hits end of life. The announcement will be made on this forum, email, admin panel, at least, possibly download or dev page as well.
- during those 6+ months, 1.0 is still an active branch, and will continue to receive security and critical functionality updates. (i.e. these days we implemented MySQL 5.5 compatibility for 1.0, too, not only 1.1, not only 2.0).
-
after that time, the 1.0 branch will reach end of life.
Please note again: we're talking about 1.0, which is still maintained as well as 1.1.x.
SMF 1.1.x will of course be supported far longer than that. SMF 1.1 stable was released in 2006. (yes, 2006). I believe that around or after the release of the NEXT stable version of SMF, 2.1 or 3.0 (whichever comes first

- j/k), we will take into account to
start a similar process for 1.1 branch. So for 1.1.x line, we're talking about of a further maintenance stage
at least for:
- next stable release (2.1)
- plus 6 months from there, or more.
- possible end of life.
I say "possible" because the process will be open every step of the way to feedback from the community. Given the long time 1.1.x has been the only popular stable version, and it is very popular, and the fact that not everyone may even wish to upgrade, I expect we will maintain it for a long time.

When 1.1.x may reach end of life is up to you, to tell us, directly or indirectly. In time, we will see how much it will be used, how much are patches downloaded, how much support is asked, if discussions around it are raised. That says something, and we'll take it into account. Just about nobody seems to remember today 1.0, and that says something as well.
