Samsung's finally released its much-anticipated Tizen smartphone, a welcome development in a market dominated by just two operating systems, Apple's iOS and Google's Android. SamsungTizen's goal is to create an open ecosystem that will be compatible with all mobile browsers. For developers, the OS offers an interesting challenge: It provides a flexible environment based on jQuery and jQuery Mobile, and its SDK will allow them to build applications by using HTML 5. As a result, experienced programmers should be able to dive right in. Tizen comes from the organization created by Intel, Samsung, NTT DoCoMo and Vodafone Group. (It's also supported by Linux Foundation.) Of these, you have to wonder why Samsung got involved? After all, it's the world's biggest manufacturer of Android phones and has a good relationship with Google. It may be as simple as getting a foothold in the open source market. At least for now, no one expects Samsung to drop Android in favor of Tizen, though that notion's had more than a few tech blogs lighting up with worry. But it's possible that in a couple of years Samsung could follow Apple's path and develop its own OS. Or, Tizen may be part of a back-up strategy in case things go south with Android and Google. At this point, that's all speculation. However, Samsung has a history of putting measures in place ahead of time to avoid problems and of taking small steps toward bigger changes. For the time being, I suggest that everyone settle down and remain patient. It will be interesting to see what Samsung does with Tizen OS. Except for Tizen's unveiling, everything's just a rumor.