It's out for a while now, you can hook up your PSVita to your Windows PC and start developing for it using Sony's free developer tools. So if you reside in India you can still develop for Sony's awesome handheld but you are not eligible to publish if you are publishing from an Indian developer account. For publishing your game on the PSVita you need a apply for a PSM Publisher License which is not available for Indian developers. But you could still go ahead and publish your game from other publishers.
So how to get started? First visit
PSM developer Portal and register for a Free account. Download the official sdk as well as the "PSM Development Assistant". The assistant is where you can plug-in your PSVita and use it for development.
The sdk uses C# as its developer language. It doesn't support C++ which is a little harsh on game developers like us.
