Aaron Paul was certified for the whole season.
The second season of Westworld ended only at the end of June, but HBO will of course work next season. Based on the latest information, Aaron Pault has been contracted for the season and is expected to be a major player.
Paul has been known for Breaking Bad Jesse Pinkman for most of them, but the actor has been featured in many movies ever since and has not missed the series. From 2016 until March this year he was the protagonist of The Path web site, as well as the BoJack Horseman animation series for Todd Chavez and also as an executive producer on Netflix’s series.
For now, it is not yet known whether it will be exactly in Westworld, but it is likely to soon become apparent when HBO starts delivering teaser trailers.