File this under rumor, folks, as these screenshots can easily be faked, but PocketPC.ch is reporting that Windows Phone "Tango" will be known as Windows Phone 7.6 and has the build number starting at 7.20.1050.5. More importantly, they allege that it will include Google+ in addition to Skype. Via Bing Translator:
In other words, the reason we have not yet seen an app for Windows Phone is because Microsoft has evidently pushed up the integration from Apollo (Windows Phone 8) to Tango (Windows Phone 7.6), making this update much more significant. In addition, Microsoft is also evidently pushing out Google+ into the mix which makes sense from a "cover the market" perspective, but should be surprising to many including those on Android, assuming it is true.
Hopefully we'll find out more in the coming weeks as to the validity of this leaked image and the content therein. But if accurate, "Tango" looks to be quite major, indeed.
Edit: As pointed out in comments by J45PER, the font for the o's in "Google" look and are spaced differently than "Facebook", calling into question the validity of the image. However, it's not clear if PocketPC.ch is claiming the screenshot is real or were just using it for illustrative purposes.
Edit 2: The source, PocketPC.ch, is denying that they faked the story or image. We of course have doubts like you, but we'll find out soon enough. Link to the "new" watermarked image, for what it's worth.
Source: PocketPC.ch; Thanks, Benjamin, for the tip!
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Daniel Rubino is the Editor-in-chief of Windows Central. He is also the head reviewer, podcast co-host, and analyst. He has been covering Microsoft since 2007, when this site was called WMExperts (and later Windows Phone Central). His interests include Windows, laptops, next-gen computing, and watches. He has been reviewing laptops since 2015 and is particularly fond of 2-in-1 convertibles, ARM processors, new form factors, and thin-and-light PCs. Before all this tech stuff, he worked on a Ph.D. in linguistics, watched people sleep (for medical purposes!), and ran the projectors at movie theaters because it was fun.