You can see in the main page, in the very few Warlock changes, that the lvl 100 talent "summon inquisitor" has changed in "summon Dread Lord", let me say, finally...
For a perfect Demonology Lock to satisfy me, i still hope in Fel lord to replace felguard at max lvl, and in Pit Lord to replace the Fel lord pvp talent (wich fits its effects even better)....
That would be nearly perfect, a glyph that allows to change the dreadstalkers with other demons would complete the picture.