These are all spoiled changes. Only the Chrono Witch changes are in the next patch(current patch?). Which gives credibility to the list. However, remember things can change in development and Tea team can go a different direction or just leave things as they are.

Of the 3 mentioned Dragon Lord AW Skills... two of the three were accurate(Granted I don't know if that was for the same source). Which would just put more credibility to the source that these are simply not implemented yet.

Dragon Spear of Destruction (破壊の竜槍): (s; attack and defence yx; intervals between attacks shorted; attacks all enemies within range; AS: ; WT: ; CT: ) This appears to be an early version of Nadia's skill
Volcano Breath (ボルケーノブレス): (s; attack yx; ranged AoE magical attack; AS: ; WT: ; CT: ) This is Abel's skill
Lightning Bolt (ライトニングボルト): (s; attack yx; range yx; ranged true damage attack; AS: ; WT: ; CT: ) Which leads me to believe this was a potential skill for Erenia, but tea team decided to go with something else.