BlackBerry wins analyst upgrades; Microsoft to add Windows stores into Best Buys

Quick news from around the Web.

@FierceWireless: Microsoft finally expands Office productivity suite to Apple's iPhone. Article $MSFT $APPL via @FierceMobiCo | [email protected]

> Microsoft plans to build Windows stores-within-stores inside more than 600 Best Buy locations. Release

> Samsung Electronics appears to be preparing the Galaxy NX mirrorless camera. Article

>  Siemens is reportedly exploring talks with private-equity firms about potentially buying Nokia Siemens Networks. Article (sub. req.)

> Microsoft's Andy Lees will step down as vice president of corporate development and will return to the company later this summer in an as-yet-unannounced role. Article

> Sony is letting developers write apps for its SmartWatch. Article

> AT&T Mobility is patenting technology for fitness apps. Article

> According to General Motors' CEO, the car is the next technology platform. Article

> Egan-Jones Ratings Co. is now supporting SoftBank's bid for Sprint Nextel. Article

> Acer said it is considering building wearable computing devices. Article

> HTC appears to be preparing to release the Butterfly S. Article

> Analysts are raising their expectations for BlackBerry on reports of improving sales from the smartphone vendor. Article

Mobile Content News

> Apple is rolling out iAd Workbench, a suite of new self-serve advertising tools enabling iOS developers to promote their applications for as little as $50. Article

> Google will shut down its AdWhirl mobile advertising mediation platform at the end of September, according to a notice on the AdWhirl homepage. Google also confirmed the move in a letter sent to developer partners. Article

> Rights management organization Broadcast Music Inc. has filed suit against Pandora Media, petitioning the Federal Rate Court to set royalty fees for all music played across the streaming music platform. Article

> According to eMarketer, Google takes home half of the world's mobile Internet advertising revenues. Article

And finally… The Microsoft Kin One is back for $25. Article