Is swift coming, can I start iOS development?

on today's WWDC2014, Apple has released a new swift. In the description of Apple executive Craig Federighi, Swift is better than objective-c in every way, and there are not so many complex symbols and expressions. At the same time, Swift is faster, more convenient, more efficient and more secure. In addition, the new Swift language is still compatible with OBJECT-C.

Even more cool, during the presentation, Apple also showed a real-time code effect preview (Swift Playground) that greatly improved programming efficiency, which is the real-time demonstration of code execution in the right-hand screen when you enter code on the left side of the screen. This makes it possible for developers to quickly preview the code forward or backward during the programming process, and the code implementation of each link will be displayed in real-time to test the response of the program they have developed at every step.

Swift allows developers to implement more content with very little code. The new Swift programming language not only changes the OBJECTIVE-C complex syntax, but also retains the dynamic nature of the Smalltalk, making it easier to use. Because it can be used with objective-c, developers can switch seamlessly during the development process.

After watching the hype, as an Android developer, I would like to ask if there is no C language, OC Foundation, have not developed an iOS app, direct Learning Swift language, can develop iOS app?