Microsoft recently release it's new Internet Explore 8 Beta 2 for public downloading. While the look is not dramatically different from Internet Explorer 7, it does have several new and enhanced features that many will find attractive: Accelerators, InPrivate Browsing and Blocking, SmartScreen filter, Search Suggestions, Web Slicing and more.
If you currently have custom applications that specifically require IE 7 to run, then you may not want to download and install IE 8 for now (as it will replace your current version of Internet Explorer). However, if you are technologically adventurous and want to take advantage of the new features, then the Beta 2 release of IE 8 may be worth the inherent risks in using beta software. Also, there is a feature in the current release of IE 8 that may allow you to experience the new features as well as access sites as if it is IE 7 -- that feature is called "Compatibility View".
In the past, when upgrading to a major new release if IE, you faced many compatibility issues over an extended period until all web sites and applications were upgraded to properly work with the new version of the browser. With Compatibility View, you now have the capability to switch to a compatibility mode that will act and look to the web site (or application) you are accessing as if it was IE 7. This means, in many cases, you can take advantage of IE 8 features now, but when needed, you can just click an icon and switch your browser to function like IE 7.
I've downloaded and installed IE 8. As I've already stated, it overwrites and replaces IE 7. On most of the regular sites I've accessed, I've noticed little difference other than some minor display formatting problems. Sites that will not work with IE 8, resulting in browser hanging and/or displaying an invalid browser message; so far have exhibited no problems after switching to Compatibility View mode.
As Microsoft explains, "A new UI button, which is coupled with policy settings, controls the Compatibility View feature. The button is located in the navigation bar, just to the right of the Address bar and next to the Refresh button. The button only appears when it is practical to switch into Compatibility View, for example when you view Standards mode webpages. In all other cases, including Quirks mode webpages or an intranet site that is already being displayed in Compatibility View, the button is hidden."
A Few Examples:
1. Our local regional MLS (Trend), will not work and gives you an error message if you attempt to log in using IE 8. After I click on the Compatibility View icon, it works. [Note: Officially, Trend will not support IE 8 until it is officially released in it's final non-Beta form.]

2. Our RE/MAX of New Jersey web site works fine for public access. For agent administration, it allows you to log in, but certain features would hang in IE 8. Again, after switching to Compatibility View mode, the features then worked.
3. ActiveRain.com for the most part works in IE 8. The exceptions I encounted so far were the automatic lookup window that pops up when typing in blog tags and some minor display formatting. Both issues were resolved in Compatibility View mode (IE 7). There was also some sporadic problems with not being able to copy and past between browser windows, in IE 8. [Note: This blog was done entirely in IE 8, with temporary switch to compatibility mode for entering tags so I could view the tag pop-up window.]
Caution: If you're currently required to use a version of Internet Explore previous to IE 7, then do not install IE 8 as you will not have compatibility with older versions.
UPDATE: See comment about McAfee software
Compatibility View also automatically remembers a site when you revisit it by maintaining a list of websites for compatibility (IE 7) mode; allows you to manually add sites to list; and lets you set all website and/or intranet sites to compatibility view mode. Settings are accessed via the "Tools" drop-down menu on the IE Command or Menu toolbars.
Copyright 2008 by Lawrence Yerkes. All Rights Reserved.