They'd miss the first test then, which is interesting. I wonder how many other teams won't have their new cars ready? I think I'm right in saying it was only Mercedes, Marussia and HRT last year and there's fewer rule changes so I thought everyone would make it this year.
Or maybe the fact that the rules haven't really changed means the teams are more willing to sacrifice a test in favour of more development time since they can be more confident that they understand their package.
We'll have to wait and see...