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#31
The title is a little bit misleading being more typical hype. But you have to take into consideration the leading role MS has played in the greater extent over the years. With that in mind you then look at how Adobe, SUN, and other software companies as well as web developers have to work in stride with each other to keep things more or less standardized.
One of the main differences between the open source community and MS is that anyone can submit an improved version of something while MS will release updates for the same version to address the same things rather then seeing an IE 8a, IE 8b, IE 8c series of releases.
With Opera for example that would see a 9.62 then 9.63 onto the 10.01 and now 10.5 with Unite. As far as using IE 9 seeing enough support for integrated grpahics such as with laptops, netbooks, and desktops(premade or custom) where no separate video card is installed MS would be sending the early stages to each OEM manufacturer for testing and further feedback to see working results.
That's where the time consumption is seen mainly. Finally the beta arrives that can be released to the general public once it has progressed far enough to see an evaluation stage for consumer review and feedback there.
Slow and careful however is always far better then "haste makes waste"! Give me a working browser! Thank you!