Sul sito MSDN ecco qualche video della durata di qualche minuto sulle novità dev di IE8:

This video shows how to implement AJAX navigation for use with Internet Explorer 8
AJAX Navigation

 

This video gives an overview of CSS Selectors and how to use them in the Selectors API with Internet Explorer 8
Selectors API

 

In this video, Matt Hester demonstrates Internet Explorer’s 8 implementation of Native JavaScript Object Notation (JSON) and the performance benefits of leveraging Native JSON for use in websites
Native JSON

 

Matt Hester demonstrates Internet Explorer’s 8 implementation of box-sizing and vertical text from the W3C’s CSS3 working draft
Box-Sizing & Vertical Text

 

Matt Hester demonstrates Internet Explorer’s 8 improvements of the getElementById method to return objects with a specified ID attribute from previous versions on Internet Explorer
getElementById

 

Matt Hester demonstrates Internet Explorer 8’s implementation of DOM storage, which provide key improvements for storing data on the client computers
DOM Storage

 

Matt Hester demonstrates Internet Explorer 8’s improvements for the methods getAttribute and setAttribute over previous versions of Internet Explorer
getAttribute & setAttribute

 

Matt Hester demonstrates how Internet Explorer 8 uses cross document messaging over using IFRAMES for mashups to provide secure communication with more functionality and ease of use
Cross Document Messaging (xdm)

 

Matt Hester demonstrates how Internet Explorer 8 uses cross domain requests over merging scripts from 3rd party applications to secure communication in mashups
Cross Domain Requests (xdr)

 

Internet Explorer 8 Meta Tag

 

In this video, Matt Hester demonstrates Internet Explorers 8’s built-in JavaScript profiler, allowing developers to improve and streamline their JS-based applications
JavaScript Profiler