6
Only very few of the fixes have to do with presentation - but it may be a good idea to spend some time until we have a new 2.0.7 release to mark the changes you have made, so you can re-apply them if the files are changed
Edit: And yes, apart from the potential security hole, there are no known issues (actually, I'm getting ahead of myself there. I *think* there are no other issues. There was one with the admin-input footer, but I think Skalpa found that one).
The hole is also there in previous versions, but the attempted fix broke some installations.
You can get a pretty good overview of at least the patches by going
Here and select the closed patches in 2.0.x category.
Generally, bugs closed after February are also in the update