Between the Internet Explorer 9 Beta and Internet Explorer 9 RC releases over 2,000
changes have been made to improve browser performance for real customer scenarios.
Internet Explorer 9 RC starts faster, loads webpages faster, and allows you to interact
with webpages faster than ever before.
tuned for the common patterns found across real-world websites. Chakra uses advanced
techniques traditionally only found in desktop optimizing compilers. A byproduct
of improving the performance of Chakra for real-world scenarios is that Internet
Dynamic GPU Usage
Internet Explorer 9 RC now dynamically decides when to use GPU based rendering and
when to use software based rendering based on the customer’s GPU and installed
graphics driver, which ensure the fastest possible experience for all customers
Industry Leading Power Consumption Levels
By leveraging the GPU for graphical computation, Internet Explorer 9 RC saves significant
power and leads the industry in power consumption by allowing the CPU to sleep for
longer durations. Internet Explorer 9 RC is also the only browser on the Windows
platform that integrates with the Windows Power Options and respects customers’
power settings to conserve power and maximize battery life.
Even cleaner interface
The new features in the Internet Explorer 9 Release Candidate (RC) continue to refine
and improve the usability of the browser. Menu bar toggle
allows you to permanently enable the menu bar with just a few clicks.
Internet Explorer 9 RC also gives you even more space to let your sites shine by
reducing the frame pixels by five over the beta release to see
more of your favorite site’s content.
With the RC Build, we continue to listen to customers and have implemented the ability
to place tabs on a separate row from the address bar providing
you more space for all your tabs.
We’ve also improved the visibility of the active tab and enabled you to
close background tabs without selecting the tab by exposing the close
button on hover. A single tab can also be closed using the close button on
the tab, which behaves the same as the frame close button.
You will now be able to pin multiple home pages in a single pinned
site with Internet Explorer 9 RC and open several webpages simultaneously.
This will both reduce the clutter on the task bar and make browsing to your favorite
sites available with a single click. Additionally, it’s now possible to pin sites to your taskbar
wherever it’s positioned and for developers to implement
drag-to-pin support right on their pages.
Increased Privacy and Protection
Tracking Protection Lists
Some content on websites can be used to track your activity as you browse the web.
Tracking Protection allows you to limit the browser's communication
with certain websites—determined by a Tracking Protection List—to help keep your
information private. Anyone can create Tracking Protection Lists, and there should
be many to choose from in the near future.
ActiveX is a technology that allows web developers to create interactive content
on their sites, but it can also pose a security risk. Internet Explorer 9 RC
allows you to block ActiveX controls for all sites, and then turn them
back on for only the sites that you trust with the new ActiveX Filtering option.
Pinned Sites InPrivate
InPrivate browsing is now supported on pinned sites giving you more
choice and increased privacy across all your browsing experiences. When you pin
a site with InPrivate browsing enabled, the next time you launch the pinned site,
the browsing session is automatically enabled as InPrivate.
Additional Standards Support
Internet Explorer 9 RC adds support for the CSS3 2D Transforms module,
which enables elements that are rendered by CSS to be transformed in two dimensional
HTML5 Semantic Tag
Internet Explorer 9 RC improves support for several HTML5 semantic tags
where a semantic element is defined as one whose tag name describes its content,
but which does not have any special behaviors. Elements now inherit from HTMLElement
and by default the elements are now styled as specified in the HTML5 specification.
With support for geolocation, Internet Explorer 9 RC enables a web
application to access the current geographical location of the PC running Internet
Explorer, as specified in the Geolocation API specification. The webpage can
then tailor the user experience according to location.
Internet Explorer 9 RC supports playback of H.264-encoded video using the HTML5 video
tag and now WebM video as well when a VP8 codec is installed on Windows.