@magicalclick: Yes I have already tested the Adobe Edge samples on Desktop IE9 (though did not test Mango phone)... comments in my earlier post was w.r.t.  Dovella's link which indicated that Adobe Edge team are going to test the Edge HTML output with WP7 .... 

What I was trying suggest that though current simple mainly Jquery based samples may run properly on IE9, if Adobe creates features in Edge which requires true html5 capabilities they may not work  or may work in degraded manner ... till IE10 on mobile

By the way thanks for Ie9 related tip ...