I'm not saying he's going to play there or that it would make sense, just that it's a greater sign than words that he's feeling better. For instance, he pulled out of the Qatar tournament before the entry list came but he didn't do it this time. He had the option not to sign up at all but he did. That's the facts we have.
I'd like to point out that every single article is based on the same interview coming from a news bureau, and the original quotes say nothing specifically about Australian Open or any other tournament(because his agent doesn't want to answer on direct questions about it). I just feel that we are reading too much into a very brief interview with an agent, whose job is to protect the client. Reading between the lines is fine, but not facts.