So, is Samsung testing the waters for offering Tizen-based smartphones? Yes. Check this out - http://www.engadget.com/2013/02/26/tizen-developer-phone-hands-on/ Samsung has been more than willing to make changes to the stock Android OS if they feel it's in their interest. Touchwiz is just the most obvious of this, but of course, S-Pen and S-Beam are two other ideas. According to this Wall Street Journal report, Google is concerned about Samsung's dominance among the Android OEMs - http://professional.wsj.com/article/SB10001424127887323699704578324220017879796.html?mg=reno64-wsj The new Samsung Wallet - which pretty much mirrors Apple's Passbook for functionality, displaying loyalty cards, not using NFC, oddly enough - bypassing Google Wallet. http://www.theverge.com/2013/2/27/4035064/samsung-wallet-app-apple-passbook-features They've gone so far as to release an API for it, so they're certainly about going up against Apple - http://developer.samsung.com/samsung-wallet-api But why not just use Google Wallet? Why do their own thing? Obviously, it's for the revenue, but why fork Android by all these services and features that differ just enough from what's offered in stock Android so as to make them proprietary? http://gizmodo.com/5987237/samsung-wallet-is-apples-passbook-on-android If you take Samsung out of the picture, what does the Android OEM ecosystem look like? HTC? LG? What's captured the market's imagination? Google owns Motorola, but they're not making new phones that really show advantages of that acquisition - yet (granted, it's only been 9 months). I mean, like the guys on the Verge podcast said - "Galaxy" is what "Droid" used to be, as far as the public awareness goes, and THAT should worry Google. As far as Google knows, Samsung's using Android to learn in the Smartphone space, and in 6 months to a year's time, Samsung could ditch Android and hitch its wagon to Tizen.