Yes. From the press conference:
https://www.reddit.com/r/baduk/comments/64hmu2/watch_live_pr...
> Last year, the AlphaGo that played against Lee Sedol was v18. The Master that achieved 60-0 was v25. Which version will play this time?
> Scott Beaumont: The exact version of AlphaGo will have to be introduced by the experts working on the project, but it will be the newest version. Defeating Ke Jie is no easy task, and AlphaGo has been continually improving. Also, we hope to continually improve Go as an art, through the wisdom of the players and AI in cooperation.
(Magist/Master was the handle under which AlphaGo played 60 online blitz games last December: https://en.wikipedia.org/wiki/AlphaGo#Unofficial_online_matc... )