CNET reports that Apple's App Store reached another major landmark, amassing 50 billion app downloads, according to the countdown timer on Apple's Web site and in iTunes. Apple also confirmed the milestone on Twitter saying, “We just hit 50 billion app downloads. Thank you. It couldn't have happened without you.” . Read More

Mashable reports that Hugo Barra, Android's VP product management announced an unlocked Google Edition of the Samsung Galaxy S4 smartphone at Google I/O in San Francisco. The user interface of the S4 is the same as the interface that Google offers on its Nexus devices. . Read More

TechCrunch reports that AirWatch, the startup that helps businesses handle security on mobile phones, has announced a $25 million round of funding, led by Accel with participation from Insight Venture Partners. Read More

The Verge reports that Google has sent Microsoft a cease and desist letter demanding that Microsoft immediately remove its YouTube application from the Windows Phone Store and disable all downloads of the app by May 22, . Read More

The Verge reports that HP announced the SlateBook x2 and the Split x2, a pair of computers that allow you to separate the display from the keypad and use it as a standalone touchscreen tablet. . Read More

Mashable reports that Google has updated its Google Play store for Android to version 4.1.6, bringing in a number of design changes and other improvements. The new, colorful home buttons on Google Play are the major visual change in this release. Read More

The Verge reports that Google will unveil its new subscription music services tomorrow at the Google I/O conference, according to sources close to the company. In preparation for the announcement, Google has signed separate licensing deals with Universal Music Group and Sony Music Entertainment for both YouTube and Google Play. Read More