IE 10, 'MoBro' tidbits leak ahead of Windows 8 CP launch

Internal Microsoft notes reveal new information about "MoBro" (Modern Browser) and a 64-bit only "Enhanced Protected Mode"

By , ITworld |  Software, IE 10, Internet Explorer

The same rigid restrictions apply to most video content: First of all, DRM (digital rights management) media is not supported and while DRM is pretty much hated across the board, some broadcasters still have no choice but to use it. Reading these notes, I was wondering how distributors of HD content are planning on targeting the Metro IE 10 if DRM isn't on board. Will everyone have their little app?

Windows Media Video V1-3 video format isn't on board, either. WEBGL 3D seems to have also been killed off in MoBro. I mean, I get it, as part of moving to an HTML5-powered web but forcing it this hard seems to really go a bit too far.

JavaScript and Browser Performance Enhancements

To offer improved performance, the JavaScript compiler seems to have undergone some optimization and a "plethora of new features" will be added to the onboard Javascript engine. Here's the note:

...such as the new html5 features and WebWorkers, JITing changes, etc.). Supports ECMA 5.0 -- see http://test262.ecmascript.org/. No multi-core in the roadmap, up to 100 WebWorkers supported, Watson (only for MoBro), new typed arrays use the native buffer, Strict mode is now supported which may break Javascript attempting to execute evals as they are not executed in strict mode (so the result below would be 10 instead of the expected 5).

To improve overall internet and browser responsiveness, Windows 8's "WinInet" (Windows Internet Application Programming Interface) seems to have undergone some under-the-hood changes. According to the internal presentation notes, site connections are now cached (and kept alive) and recycled for several "Get Requests" in one page, which reduces both traffic and improves performance. Since IE 10 isn't the only application making use of WinInet, other online applications benefit from it as well. Plus, the overhead of WinInet is being reduced since now all IE tabs/instances share only one WinInet service instead of creating a separate WinInet process.

We'll have more answers on those mysterious notes soon. Stay tuned.

This article, "IE 10, 'MoBro' tidbits leak ahead of Windows 8 CP launch," was originally published at ITworld. For the latest IT news, analysis and how-tos, follow ITworld on Twitter and Facebook.

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