Andrew Zarian asks Paul Thurrott what to expect when Microsoft releases the preview build for Windows 9. Will it be fairly complete version? And how has Microsoft changed Windows 9 to please enterprise users? Dropbox updates it’s Pro plan to include 1TB of storage. Why did it take so long for Dropbox to offer more storage? Amazon buys Twitch for nearly a billion dollars. What will Amazon do with a live video gaming platform?