A number of major cloud developments cropped up this week. We’ve learned that a major Gmail upgrade is in the works, Yahoo agreed to shell out over $500 million to buy Hulu, and Hewlett-Packard announced a set of platforms, apps and products for enterprise developers. A number of ambitious startups also earned themselves a spot in the limelight at the O’Reilly Fluent Startup Showcase.

On Monday, the blogosphere erupted over screenshots of what appears to be a new Android client for Gmail. Early reports indicated that the Google plans to roll out the patch to the iOS and web versions of its email clients shortly after the Android patch goes live. Based on the images, the upcoming version of Gmail will sport automatic email sorting and a new menu-based interface that gives the service a much cleaner look.

The other big highlight from Monday was the news that Yahoo agreed to pay between $600 million and $800 million for Hulu. According to the anonymous tipster who leaked the info, the price will depend on “the length of the licensing rights for Hulu’s content and how much control the programming companies selling Hulu have over their media.”

A couple days after Yahoo’s bid became public knowledge, Hewlett-Packard introduced a suite of tools and services for corporate developers. The bundle includes Application Integration to Cloud, a set of services that help enterprises connect their on-premise and mobile apps with cloud environments.

On Thursday, a startup called kWIQly made a splash when it received the opportunity to demonstrate its product at the O’Reilly Fluent Startup Showcase. The firm’s software-as-a-service solution leverages pattern recognition algorithms to help users track and minimize energy waste.