I got an email from Adobe yesterday reminding me that I needed to update some payment information for an online subscription I have with the company. (Actually, I needed to disable auto-renewal on the service, which I am no longer using, but that’s another story.)
I use Internet Explorer 10 as my default browser on Windows 8.
Clicking the link in the email opened this page:
Seriously, Adobe? You think I’m running Internet Explorer 4?
And you want me to replace it with Netscape Navigator or AOL?
This does not give me great confidence in your web-based services.
Ed Bott (@ wordpress.com) 
No, they do not think you’re running Internet Explorer 4. They think you’re running Internet Explorer 1. Because that’s what you get with a regex pattern match.
I’ve seen this on a number of non-Adobe websites already. I’ve contacted several pre-RTM, and they claimed to be waiting for RTM before they’ll fix it. I contacted several after RTM, and they claimed to be waiting for GA before they’ll fix it.