This revelation comes from YouTuber Doctre81 and Doctre81, who discovered the job description "Online Software Engineer - (C+) (C++) - Madden" which dates back to November 2020. The job description includes requirements for Madden nfl 22 coins applicants there's a section asking for two years of experience with "Microsoft, Sony or Nintendo gaming consoles". That might not sound like much however, previous EA job listings haven't included Nintendo within their selection criteria.
EA may be looking into possible releases. It's worth keeping in mind that back in June 2020, EA confirmed it would buy Madden 22 coins launch seven Switch games during the 12 month time frame. Six confirmed games have been released in June 2020, which includes Apex Legends that was revealed just this week.