Well, at the time I started creating this, the exam was Java 7. I'm working on a revision for Java 8 right now. These things take a _looooong_ time to do well! Hopefully, just a few months though to get this out.
I can't promise, but I have asked my publisher and at the moment, they seem amenable to splitting out certain key units that address the new material for Java 8 and making a special upgrade "only for existing customers" type of offer. I hope that'll happen, but as I say, it's not ultimately my decision.
As to Java 9, that's a ways away yet, and they don't even start to define the objectives, never mind start the long, arduous, process of creating the exam until after the product is released. So, yes, I expect to be busy in the studio creating more new material in a couple of years or so when that happens
Cheers,
Simon