The Acolyte creator Leslye Headland set up some story threads that could be explored in future seasons of the show. One of the most interesting elements was brief introduction of Darth Plagueis. But,

In addition to Vernestra Rwoh going to visit Yoda in the final moments of the series finale, we also met a mysterious being who was identified offscreen as Darth Plagueis, the Sith Lord who will go on to train Palpatine.

The Acolyte star Manny Jacinto has shared that the series would have featured more of Darth Plagueis had it been renewed for a second season. As part of a panel at FanExpo San Francisco hosted by Collider,

Jacinto remained cautious to overpromise but gave fans of the cancelled Disney+ series some hope for a continuation during a San Francisco FanExpo panel hosted by Collider. Darth Plagueis made his long-awaited Star Wars canon debut in the season finale of The Acolyte, and a fan asked how he was connected to Jacinto's Qimir.

The Acolyte star Manny Jacinto teases that a multi-season plan for Darth Plagueis had the series not been cancelled.

Even though The Acolyte may not be returning for another season, some involved with the project have hinted that more seasons were definitely planned. According to Manny Jacinto, audiences could have even been introduced to more of Darth Plagueis's story in future seasons.