does this mean:
YES, you can use WPML, we will make PRO compatible with the actual and future versions?
or does this mean:
NO, we don't konw, if we will be able to get PRO running with the actual and future versions of PRO, so PRO is probably not the best choice for al multilingual site?
Sorry for beeing that clear, but I didn't start the project yet, so I still can chose, how to realize it. If I start the project with PRO / WPML and than have to change everything a few month after, because things don't fit together, I will have to spend a lot of extra time no one will pay.
So it's quite important for me, to know if I can rely on the multilingual capacities of PRO or not.