Elizabeth Wagmeister Senior CorrespondentAs drama continues to unfold on the set of “The Bachelorette,” the team behind the hit show continues to keep the mystery alive.Marketing materials for the upcoming season were released on Thursday by ABC, showcasing leading lady Clare Crawley — but not Tayshia Adams, who has been reported to have swapped in as the new star of the season halfway through filming, as production is underway.Though rumors have been swirling that Adams replaces Crawley