Update March 31: Via email, Microsoft says the slide in yesterday's presentation was misleading: "Microsoft is not building a native ad blocker with Microsoft Edge. What you saw is a reference to the work we're already doing in bringing extensions to Microsoft Edge, as mentioned in the latest blog as 3rd party ad blocker support."
One of Microsoft's biggest gambles in Windows 10 is its decision to turn Internet Explorer into a legacy product, primarily for enterprise customers.
Its replacement, Microsoft Edge, has been developing slowly since its version 1.0 release with the first release of Windows 10. But judging from a session at today's Build conference in San Francisco, the pace of development is about to pick up.
The feature most power users are awaiting is the availability of JavaScript extensions, similar to those available in Google's Chrome browser. That feature is currently available in Insider preview releases of Windows 10, with one eagerly anticipated extension, AdBlock Plus,
already confirmed as an early arrival.