Moar like the seiyuus have been announced and it looks like so has (some of) the plot.

Okie so there's moar Yu-counterparts than we expected and have already saw in arc v.

But they don't have the same prefix "Yu" that the others have...

Anywho here are the seiyuus for said protags:

Tsubasa Yonaga as Yamon (the orange haired Yuya counterpart of the Rhythm Dimension)

Yuki Kaiji as Retasu (The Green haired yuya counterpart of the Ritual Dimension, and he's one of Lyra's brainwashed mind slaves as part of the plot ;))

Ai Orikasa as Eureeka (The orange and pink haired Yuzu counterpart of the Ritual Dimension who is also brainwashed by Lyra)

and Aki Maeda as Rizimu (The blue and yellow haired Yuzu counterpart of the rhythm dimension)

Also Hosaayan Yoishimasa reprises his role as Shadow

Atsushi Tamura and Asuca Hayashi reprise their roles as Paradox and Lyra

Shunsuke Kazama reprises his role as Yugi; Kenn and Yuya Miyashita are still Judai and Yusei respectively.

and Ono Kensuke reprises Yuya

Yukai and Yolanda and everyyugi else keeps their seiyuus also.

And now for the plot:

After receiving a mysterious warning Team Ultimatus find themselves in a remote part of the rhythm dimension and thanks to the fake distress signal, they are trapped there by Lyra and her new recruits, and soon become brainwashed themselves. Meanwhile Yugi's God cards get stolen by Paradox, and he winds up being trapped in the Xyz Dimension where he meets Yuma and Yuya. Together, along with Yusei and Judai whom also appear to save the future once again, they travel to Astral world where they duel against Lyra and her new servants, including a brainwashed Astral.

Sounds Pretty Epic No? :)