We've just launched a 3D version of Virtual Earth, take a look at http://maps.live.com. It's pretty cool. Here's a map showing the London Eye and surrounds.
It still has the features you've come to expect from Virtual Earth - driving directions show up in this 3D view just like normal, as do pushpins. And there's plenty for developers too, take a look at http://dev.live.com/blogs/devlive/archive/2006/11/07/69.aspx for more details.