IE 11, which is part of the W8.1 update for W8.1 from W8 has been released for Windows 7 as well.
Interestingly, it hasn’t been released for Windows 8, and won’t be released for Windows Vista nor XP. I doubt it will be the reason to update to W8.1, by itself. If you don’t want it, there’s a tool to block the update from your network: http://www.microsoft.com/en-us/download/details.aspx?id=40722
However, when compared to IE 9 or 10, it is improved, noticably. It has been touted as faster than Chrome and Firefox, but that really depends on which tool is used to measure the speed, despite MS telling you it’s 30% faster. It looks the same, which means you know what.
(from ghacks.net)
There’s a list of unsupported features of IE 11 on W7 (for devs, mostly)…and you can find it here: http://msdn.microsoft.com/en-us/library/ie/dn394063%28v=vs.85%29.aspx#unsupported_features
If you’re on Windows 7 (like me) and want IE 11, here’s where to download it from:
http://windows.microsoft.com/en-us/internet-explorer/ie-11-worldwide-languages
Sources:
http://www.neowin.net/news/ie11-now-available-for-windows-7
http://www.ghacks.net/2013/11/07/microsoft-releases-internet-explorer-11-windows-7/?_m=3n.0038.1058.hj0ao01hy5.139c