I'm not breaking news here: Developers are in short supply. If you've been in the market for Developers recently you will know the competition is tough.

What do Developers want to know about your organisation and the job on offer? Not surprisingly, they want to know about the technology and the projects they'll work on and you probably can't provide too much information about that. As long as it's specific. 

They do also want to know what your office and culture is like, who they'll work with, development opportunities and insight into what working for you will be like - and if these points aren't really clear it will be much more difficult for you to attract people, even for an interview, as no one will want to waste time exploring whether the 'basics' will suit them.