OS X 10.9 Mavericks and Cubase 7

So I know Steinberg have said the following:

Some Steinberg hardware products need to be updated as well to ensure full compatibility with the new OS X version. We therefore recommend you not to upgrade to OS X 10.9 yet.*

But I just bought a new Mac Pro which comes with Mavericks out the box and recently purchased Cubase 7. So what do I do? Will this fix for Mavericks even be free or will I have to pay to upgrade the version of cubase I haven’t even been able to use yet? Do I return Cubase and get my money back? There is no sign of an official ETA from anywhere apart from “We are working on it”.

Some kind of indication would be good, at least that would eliminate the uncertainty.