As of my last knowledge update in September 2021, there was no official information or confirmation regarding Elvish Yadav's participation in the reality TV show "Bigg Boss." Elvish Yadav is a popular Indian YouTuber, comedian, and content creator known for his humorous videos and skits. Please note that plans and participants for reality TV shows like "Bigg Boss" can change from season to season, and new developments may have occurred since my last update. If you're looking for the most up-to-date information about Elvish Yadav's potential participation in "Bigg Boss," I recommend checking official announcements, reliable news sources, or the show's official social media channels for any recent updates.