"The Dancing With The Stars" season 25 cast reveal is set for September 6 but fans will get to see one couple introduced a few days early. On August 30, Emma Slater will appear on "Good Morning America" with her celebrity partner.

Emma, who won the Mirrorball trophy with Rashad Jennings last season, spread the news on Instagram on Tuesday and asked fans to guess who her new partner is. So, who will be dancing with Emma this season and who which Celebrities are rumored to be part of the "DWTS" season 25 cast? Here's what we know so far!

Emma returns to defend her title

On Tuesday, Emma appeared on the @DancingABC Instagram story and revealed that her celebrity partner will be announced on "Good Morning America" August 30. (The rest of this season's partners will be introduced on September 6.) Emma is the defending champ — perhaps that's why ABC chose to announce her partner ahead of the others.

"I really think you should check out 'GMA' tomorrow morning because it looks my partner is going to be announced," Emma stated on Tuesday afternoon. "I already know who he is. But you don't. Let me know if you think you know who he is. He's fantastic and I really think you should check it out tomorrow!"

The season 24 champion didn't drop any major hints but there is speculation that her partner could be Drew Scott, the co-star of HGTV's "Property Brothers." There are also rumors that Zac Efron will be joining the "Dancing with the Stars" cast — if so, we could totally see Emma and Zac paired up.

More cast rumors

Next week (September 6), "Dancing with the Stars" fans will finally get to see the entire season 25 cast lineup on "Good Morning America." Aside from Drew Scott ("Property Brothers"), there are several other celebrities who are rumored to be working on their dance moves ahead of the September 18 premiere.

Singer Nick Lachey (98 Degrees) and his wife, Vanessa (Minnillo) Lachey, will be part of the season 25 cast, per TV Guide. There is speculation that Nick and Vanessa will partner up with another married couple — pros Maksim Chmerkovskiy and Peta Murgatroyd.

Other rumored celebrity dancers include, "Total Divas" star Nikki Bella, Jordan Fisher ("Hamilton"), Disney star Cameron Boyce, and actress Lindsay Lohan (although we're not so sure the Lohan rumor is true).

While they didn't give names, Pure DWTS dropped some big hints about who three of this season's pros will be partnered with. Val Chmerkovskiy's partner is reportedly disabled. Sharna Burgess is rumored to be partnered with an NBA star. And then there's the new pro, former troupe dancer Alan Bernsten who may be paired with an "older partner." Sounds like Alan may have his work cut out for him!

Find out who Emma's partner is on "Good Morning America" (7 a.m. - 9 a.m. ET) on August 30 and tune into "GMA" for the complete "DWTS" cast reveal on September 6.