The Internet Explorer developers want to clarify some things regarding IE7:
I wanted to make it clear that we know Beta 1 makes little progress for web developers in improving our standards support, particularly in our CSS implementation. I feel badly about this, but we have been focused on how to get the most done overall for IE7, so due to our lead time for locking down beta releases and ramping up our team, we could not get a whole lot done in the platform in beta 1. However, I know this will be better in Beta 2 – and I want to share how we are placing our priorities in IE.
In the web platform team that I lead, our top priority is (and will likely always be) security – not just mechanical “fix buffer overruns” type stuff, but innovative stuff like the anti-phishing work and low-rights IE. For IE7 in particular, our next major priority is removing the biggest causes of difficulty for web developers. To that end, we’ve dug through a lot of sites detailing IE bugs that cause pain for web developers, like PositionIsEverything and Quirksmode, and categorized and investigated those issues; we’ve taken feedback from you directly (yes, we do read the responses to our blog posts) on what bugs affect you the most and what features you’d most like to see, and we’ve planned out what we can and can’t do in IE7.
Here's a list of bugs for web developers that are now fixed - although some not yet in IE7 Beta 1:
Duplicate Character bug
No Scroll bug
3 Pixel Text Jog
Magic Creeping Text bug
Bottom Margin bug on Hover
Losing the ability to highlight text under the top border
IE/Win Line-height bug
Double Float Margin Bug
Quirky Percentages in IE
Moving viewport scrollbar outside HTML borders
1 px border style
In addition they have added support for the following
HTML 4.01 ABBR tag
Improved (though not yet perfect) <object> fallback
CSS 2.1 Selector support (child, adjacent, attribute, first-child etc.)
CSS 2.1 Fixed positioning
Alpha channel in PNG images
Fix :hover on all elements
Background-attachment: fixed on all elements not just body
I want to be clear that our intent is to build a platform that fully complies with the appropriate web standards, in particular CSS 2 ( 2.1, once it’s been Recommended). I think we will make a lot of progress against that in IE7 through our goal of removing the worst painful bugs that make our platform difficult to use for web developers.