The Great Ace Attorney, a new spin-off prequel based on Phoenix Wright franchise set in early 20th century - will include Sherlock Holmes and Dr Watson as characters in the game, as confirmed by Famitsu (via Kotaku).
According to his character description in the mag, Holmes is "The most famous detective in the world. His unparalleled observation and deductive skills see not only the 'truth' but sometimes go beyond the truth and become a 'rampage of logic.' He resides in London", while Watson is being re-imagined as an eight-year-old gothic Lolita.
And that's what we have learnt about her: "a young girl who lives with Holmes. She holds a medical Ph.D. at the age of eight, and wrote the novel series, 'The Adventures of Sherlock Holmes'."
The Great Ace Attorney will feature Phoenix Wright's ancestor Ryunosuke Naruhodo and it will be launched in Japan in 2015. No release date or Western translation has been announced at the moment.