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.

January 27th, 2008 at 12:58 am
This is like the hot Britney Spears newsline of the moment, but on web standards blogs. =P
January 27th, 2008 at 9:24 am
Well, it certainly deserves our immediate attention. Browser developers need to be uber-informed on what we think on the subject, so they don’t screw up.