SDK for Sony Alphas available?

SDK for Sony Alphas available?

Hi, we are writing imaging software, at the moment using Canon Cameras
and their SDKs, and we have applied for the Nikon one, and we are
wanting to use Sony Alphas too.

I have looked around sonys sites and done a bit of googling, but have
not found any such SDK.

Does such a thing exist, and if so where is it available?

Thanks
Oolis.