Here is the web development news for the second half of april:

Some IE9 News

Check out the network tab of the IE9 developer tools:
IE9 Developer Tools Network Tab

The Web Fonts Standard

Mozilla, Microsoft, and Opera have come together and submitted a new standard for web-fonts. This is great news for the future of the web, where we won&rsquot;t be limited to a handful of fonts.
http://www.w3.org/Submission/2010/03/

New Mootools Version

The MooTools team has released a new version:
MooTools 1.3 Beta 1 Released

High Performance JavaScript

CSS 3 For IE

Smashing Magazine has taken an in-depth look at CSS 3 support in IE and alertnative solutions:
CSS3 Solutions for Internet Explorer