Even if we ignore the inconsistency of Blizzard's writing/communication and how they tend to go back on their word the answer is still "no".
What they have said is "we won't be seeing much of him during the expansion".
Thinking that means he has nothing to do with shadowlands would be just straight up stupid... considering how we knew his blade had something to do with the maw ever since the 1st covenant video containing uther confirmed it.