IIRC, Yoshi said that we wouldn't get one for EW due to resource limitations and that we get V/C and Deep Dungeon instead this time. The chances for new dedicated relic zones for the next expansion aren't looking bad. (was said in one the the past live letters). Despite the hatred for such content in the forums it apparently was well received by the playerbase.

I just wonder IF it continues the story from the Shb Relic-zones, since its story was said to be continued in the ending screen ^^