I agree with KB, it sounds very positive - the same thing happened with my PhD. I had an interview for a PhD on a funded project but they offered that place to someone with more specific knowledge for that particular project, then they put an application in for me to get some departmental funding to do my own research project. It wasn't guaranteed that I would get the funding but because they were inside the department they knew how to give me the best chance. Anyway, I got the funding so am doing that PhD. But how likely that is for you depends on the department and where they're going for funding. But it's definitely a positive thing, so congratulations on getting so far, and fingers crossed that the funding is found!