There are a couple of nice IE8 specific features in Artinsoft’s markup productivity and maintenance tool Aggiorno:
The former provides some template code to make it easy to create a web slice while the latter allows you to identify a document or folder and apply or remove a specific IE8 Meta Tag. While you’re more likely to set the HTTP header if you want a whole site to be affected, this seems like a good way to manage broad changes or exceptions for your site.
Worth a look at least.
PingBack from http://blogs.msdn.com/mikeormond/archive/2009/01/28/artinsoft-s-aggiorno-s-ie8-readiness-features.aspx