So much for Microsoft promises, according to El Reg:

The dirty secret is buried deep down in the «Compatibility view» configuration panel, where the «Display intranet sites in Compatibility View» box is checked by default. Thus, by default, intranet pages are not viewed in standards mode.

The icon they’ve selected for standards compliant pages is also a little odd..

I do prefer El Reg’s idea that they use the ACID2 test image instead..