If any of this is coming out, it’s going to be way in the future as an expansion or something. It’s safe to say they won’t be adding a new tree before release. Also, keep in mind that the max base level is somewhere between 400 and 600, so having a max rank of 7 will get really stale, fast (we’ll be reaching rank 7 around 230, give or take a few levels).
Also, rank 8 was officially confirmed in the JP interview, and based on this bit of data, at least rank 9 is likely. Not sure about rank 11 being a true rank, though, and if it isn’t, and rank 9 is the last rank, then all of the swordsmen classes listed above are it (there are 2 for each rank, up to rank 9). However, I don’t think rank 9 will be max, either, and regardless if it is, they might throw in some extra “third class” options in regard to hidden classes.