Juan Carlos PerezAssistant News Editor, IDG News Service

Juan Carlos Perez covers e-commerce, Google, web-application development, and cloud applications for the IDG News Service.

updatedReport: Yahoo board OKs deal to buy Tumblr for $1.1 billion

Google I/O's Apps news was low-key but significant

Salesforce.com adds central file view to Chatter mobile app

Windows Blue will be free upgrade for Windows 8 customers

pcworld.com

Microsoft's Windows 8 update, code-named Windows Blue, will be formally released as Windows 8.1 and will be free for customers who have the new OS installed.

Outlook.com to let users engage in IM chats with Gmail users

pcworld.com

Microsoft is upgrading its new Outlook.com webmail service so that its users can communicate with Gmail users via instant messaging.

Box to revamp document viewing with Crocodoc acquisition

Microsoft says Yammer sales are booming

Windows Blue preview due at end of June

pcworld.com

Microsoft plans to release a preview version of Windows 8's update, code-named Windows Blue, at the end of June, according to Julie Larson-Green, a corporate vice president in charge of the OS's development.