* Amazon (AMZN) didn’t just unveil one new Kindle, but four — nearly one for every user scenario — including the widely-anticipated Kindle Fire ($199), sporting a color screen and multimedia functionality; two flavors of the Kindle Touch ($99 for WiFi-only, $149 for 3G), with a black-and-white, e-ink touchscreen; and the Kindle ($79), a button-operated successor to today’s model.

* Samsung signed an Android patent-related deal whereby Microsoft (MSFT) will get a cut of the revenue from every Samsung-made Android smartphone and tablet sold. (AllThingsD)

* A two-minute video preview of Android Ice Cream Sandwich, the latest operating system update due within the next two months. (Engadget)

* Wired writer Steven Levy spoke with Google VP of products Bradley Horowitz for an inside look at Google+. (Wired)

* Marc Andreessen believes the clock is ticking on Oracle (ORCL) and other “old-line” software and infrastructure companies. Case in point: all of the companies in Andreessen Horowitz’s portfolio use a cloud-based solution instead. (Business Insider)

* Enterprise-friendly cloud startup Box.net raised $50 million from investors like Salesforce.com (CRM).

Don’t miss the latest tech news. Sign up now to get Today in Tech emailed to you each and every morning.