"Dancing With the Stars" returns for Season 20 in March and ABC revealed which pro dancers will be hitting the ballroom in hopes of winning the coveted Mirror Ball. The big reveal took place on "Good Morning America" on Wednesday (Feb. 11).

It was previously reported that fan-favorites Cheryl Burke and Derek Hough wouldn't be back because of other obligations. Hough is taking this season off because he was in Radio City Music Hall's "New York Spring Spectacular."

Burke left because she decided to head over to NBC for a still-untitled reality show, People magazine reported. On Tuesday, one day before the pro dancers were revealed, Karina Smirnoff announced on Instagram that she wouldn't be competing because she wanted to focus on something else.

The newly engaged 37-year-old revealed in a lengthy post that she just wrote her first book called "We're Just Not That Into You - Dating Disasters From the Trenches."

"I've decided to focus my energies on some other exciting endeavors including adding author to my resume," she said. "I have absolutely loved dancing for all of you for all these years and feel blessed to have been given a platform to put my passion for dance, choreography and creativity on display. DWTS has been a huge part of my life for the last 10 years and I will always have a special place in my heart for it."

So which pros will be samba-ing across the dance floor next month? Veteran dancers Mark Ballas, Val Chmerkovskiy, Peta Murgatroyd and Tony Dovolani will all be competing for Season 20. Joining them are Kym Johnson, Sharna Burgess, Emma Slater, Artem Chigvinstev, Allison Holker and Season 19 winner Witney Carson.

Carson won with former "Fresh Prince" star Alfonso Ribeiro. "Good Morning America" also revealed that producers are bring back two popular theme nights, Latin and Disney, and are introducing a "Spring Break special" night.

Another new element to the show, cameras will be hidden throughout the rehearsal studios and live streamed online.

"I think you're going to see a lot that you haven't seen before," Burgess said. "It's quite scary for us because you never know, we don't know where the cameras are going to be. We don't know when they're going to be on."