Yay
Now this is good news. Even though the iDRAC has been getting better the past few years, the actual (Java) console is still very flakey and always seems to crap out just at the wrong point, usually straight after a reboot or just before the kernel splash screen... Hopefully this new HTML5 version will be a lot more solid.
Also slightly related we've just upgraded IE at work, and loads of iDRAC now play silly buggers unless you use compatability mode.