Browser Version Targeting Anyone?

Sooner than later we may be dropped into a world of version targeting and forward compatibility, when it comes to web development. The basic idea is to use a meta declaration to specify which browsers and versions our web page intends to support. For example, writing:

<meta http-equiv="X-UA-Compatible" content="IE=7;FF=2" />

… would say that our page was tested and works on IE version 7 and Firefox version 2, for example.

Now, the problem I see here is in actual browser support for backwards-compatibility rendering. Do we really believe that once IE 10 is out, our IE=7 will still work? If you ask me, this is a recipe for failure.

Read more on the subject on alistapart.com, for some enlightening articles on the subject.