Kristen Bell, who played Princess Anna, said that the "Frozen 2" is not yet in place as the trailer for "Frozen Fever" was released.

"'Frozen Fever' takes place just a few months since we last saw the gang, it's actually Anna's birthday but Elsa is complicating things," the directors of the animated short, Chris and Jennifer, said.

The plot for "Frozen Fever" said that Elsa and Kristoff are working together to give Anna a surprise birthday party. However, the queen catches a cold on the same day of the party, which risks everything they prepared.

Apparently, the ice queen having a cold has unintended consequences, said Daily Mail.

"The recent trailer only centers around the cheerful party preparations also debuting a new original song that will surely give 'Let It Go' a run for its money," it said.

The song "Let it Go" won for songwriters Robert and Kristen Lopez an Oscar.

In an interview with Bustle, Kristen Bell said that "Frozen 2" release date is not in the offing since production has not even been "green-lighted" yet.

"There is so much speculation, mostly because people have wanted it so bad. They've read into quotes or otherwise," she said. "They definitely have not green-lit it. I would really hope they do, as all of our cast members would love to be involved. We're twiddling our thumbs and trying to nudge them in the right direction."

Bustle said that fans can anticipate "Frozen 2" release date because a sequel is a "foregone conclusion."

According to Box-Office Mojo, the 2013 animated film grossed $1,274,219,009 worldwide, with $400 million in domestic sales, which spelled huge profits for Disney which allocated $150 million budget to make "Frozen."

"It's earned 'beloved' status among fans of all ages and 'Frozen 2' sounds like instant box office jackpot," Bustle added.