We do our best to ensure that we alert the community in advance of game changes (just like we did for the Legendary Item Improvements), and in this particular case, I wanted to jump in to reassure everyone that “black weapons” (i.e. weapons with the MinMaxDamage Affix) are not going to be nerfed in patch 1.0.7, and we have no plans going forward to nerf them.
Known Issues are just that, bugs that we know about. They are NOT necessarily bugs that are going to be fixed. The MinMaxDamage bug has been a bug known to us since July of last year, however, we did not want to fix a bug that would effectively nerf a large number of existing weapons. That’s why we did not fix the bug in any previous patch that we've released since the bug was found, nor are we fixing it in patch 1.0.7. Currently, the plan is that at such a time that we address the bug, the bug fix will only apply to newly created items, so as to not adversely affect existing items.