So is there anyone here that knows the exact dates of each of these new episodes?
While some sources indicate September 12, 1983 as the nighttime debut and WKBW was known to debut the series on August 22, including
Wheel itself, the Encyclopedia of TV Game Shows lists September 19 as the premiere, and for the purposes of this thread, will assume #S-1 to have premiered on that day. Therefore, the earliest nighttime episode in Pluto's rotation, is S-#3 (Steven/Pam/Jodi), which presumably aired on September 21. The other episodes currently in the rotation prior to Season 7 when returning champions debuted, are as follows, assuming the given premiere and that the episodes aired in proper order:
SEASON 1 (1983-84)S-15 10/7/1983 (Lou/Cindy/Karen, on-set trees are still green)
S-41** 11/14/1983 (Ginger/Joy/Andy, brown-leaf trees)
S-89* 1/26/1984 (Linda/Phil/Carole, the old Merv Griffin in-credit logo is still present and the copyright date still says 1983, and it could have very well aired in December 1983 on WKBW, the white winter-themed trees with lights are now present)
S-105* 2/17/1984 (Leanne/David/Becky, the animated Merv Griffin logo is introduced and the copyright date now says 1984)
S-125* 3/16/1984 (Diane/Sue/Jeff, Charlie announces, set still has the white trees with lights, listed as being from December 1983 on the timeline)
S-128* 3/21/1984 (Lydia/Jessica/Jill, Charlie announces, white trees with lights still present)
S-186* 6/18/1984 (Edith/Andrew/Lorraine, foliage walls present)
*Note: This assumes reruns the week of December 26 and another week of reruns the week of April 23.
** The timeline lists 11/15/83 as S-52, which may have aired on a bicycled affiliate.
Also, much of the timeline for this season is currently based upon tape dates as opposed to airdates based upon the production numbers provided.
SEASON 2 (1984-85)S-205 9/21/1984 (Eunita/Barbara/Keith)
S-212 10/2/1984 (Amber/Kathy/Norm, still with the old contestant backdrops, currently listed as October 11 on the timeline)
S-214 10/4/1984 (Renee/Helena/Galen, still with the old backdrops, currently listed as October 3 on the timeline)
S-269 12/20/1984 (Reiko/Ralph/Conrad)
S-296* 2/4/1985 (Maryann/Linda/Joel, with the animated Wheel logo but still just a solid blue, medium Helvetica "shadow" chyrons)
S-338* 4/3/1985 (Judy/Mark/Shelia)
S-386* 6/17/1985 (Lori/Peggy/David)
*This assumes reruns the week of either December 31 or January 7 (presumably the former), and another week of reruns the week of April 8.
SEASON 3 (1985-86)
S-399 9/19/1985 (Dianne/Dona/Chris)
S-417 10/15/1985 (Ednita/Mario/Kathy)
S-449 11/28/1985 (Kerri/Rick/Lulu, Charlie announces, currently listed as October 31 on the timeline, no references to Halloween or Thanksgiving present)
S-460 12/13/1985 (Mary/Mike/Patty)
S-461 12/16/1985 (Helen/Anna/Gene, Christmas decorations on the walls, currently listed as December 23 on the timeline)
S-493* 2/5/1986 (Judith/Elizabeth/Blue, blinking lights now present on the walls)
S-494* 2/6/1986 (John/Molly/Linda, currently listed as February 11 on the timeline)
S-517* 3/11/1986 (Dick/Diane/Betty, currently listed as March 14 on the timeline)
S-539* 4/17/1986 (Nick/Toots/Don)
S-561* 5/19/1986 (Tom/Dina/Janie)
*This assumes reruns the weeks of December 30 and March 31.
SEASON 4 (1986-87)S-631 11/10/1986 (Lorraine/Patti/Mark, print taken from a summer 1987 rerun with 1987 copyright date and Coca-Cola byline)
S-632 11/11/1986 (Lee/Becky/Peter, print taken from a summer 1987 rerun)
S-651 12/8/1986 (Jeff/Ruth/Debbie, no Coca-Cola byline present, currently listed as November 13 on the timeline)
S-655 12/12/1986 (Michelle/Debbie/Harvey, features a $31,211 Cadillac Seville as the Round 2 prize, print taken from a summer 1987 rerun)
S-671* 1/12/1987 (Ann/Valerie/Helen, currently listed as airing the previous week on the timeline, print taken from a 1988 weekend rerun with yellow Merv Griffin logo and 1988 copyright date)
S-686* 2/2/1987 (Susanne/Rosemarie/Shauna)
S-703* 2/25/1987 (Linda/Dave/Leonid, print taken from a 1988 weekend rerun)
S-714* 3/12/1987 (Barbara/Judy/Albin)
S-730* 4/3/1987 (Debi/Joy/Leigh, currently listed as March 31 on the timeline)
S-737* 4/21/1987 (Sue/Glenn/Maggie)
S-741* 4/27/1987 (Bob/Nancy/Eleanor)
S-767* 6/2/1987 (Paula/Miriam/Jim, timeline currently lists this date as "Sandy/Jim/Fran")
S-772* 6/9/1987 (Wanda/Nancy/Lee)
S-773* 6/10/1987 (Maryann/Myrtice/Mickey)
S-774* 6/11/1987 (Irene/Ingrid/Jerry)
S-775* 6/12/1987 (Michael/Greg/Alison)
S-776* 6/15/1987 (Ray/Michelle/Rina)
S-777* 6/16/1987 (Joy/Elena/Ira)
S-778* 6/17/1987 (Jim/Gene/Deena)
S-779* 6/18/1987 (Mel/Betsy/Amber)
S-780* 6/19/1987 (Clay/Vonnie/Robin, unannounced Season 4 finale)
*This assumes reruns the weeks of December 29 and April 13.
SEASON 5 (1987-88)S-781 9/14/1987 (Vera/Gary/Ken, listed as September 16 on the timeline, no reference to a new season is mentioned, the 1987 music package debuts)
S-782 9/15/1987 (Sandy/Mark/Jim)
S-783 9/16/1987 (Nancy/Tracey/Mitch)
S-791 through S-795 Week of 9/28/1987 (Battle of the Sexes Week, listed on the timeline as airing the week of September 21, so its likely that S-786 through S-790 aired the week of September 28, although Pat mentions the upcoming Big Month of Cash on one episode)
Of course, the Tom Kennedy version of The Price Is Right is known for having numerous episodes air out of order, but this guide provides a presumable order that probably was fiction on your local affiliate, with the possible exception of the early Season 5 episodes.