Directing the special will be Shuhei Matsushita (DEEMO Memorial Keys), with Yuichiro Kido returning to write the script. In addition, Yuko Iwasa returns as the character designer. Like the main Dr. Stone anime, it is animated by TMS Entertainment.
Dr. Stone: Ryusui is set to premiere this July 10th at 7pm JST on Tokyo MX and BS11. Lastly, a new Dr. Stone chapter will be released in this year's 31st issue of Weekly Shonen Jump, which is set for a July 4th release. more details about it will be revealed in said magazine on June 27th.
[Source: Anime News Network (link 2)]