I can't find anything on a tv show, just movies. If it os a tb show then you're probably right, if a movie, he's already finished filming

I don't know why but no Toku site relayed the info. Maybe it's not popular enough.

But everything is on the official GARO twitter (in Japanese) : https://twitter.com/GARO_PROJECT

Full cast was even announced on July 20th tweets.

The kana says it's 'Kamen Rider Zi-O Decade Armour'. So it can't be Decade.

August 1 is when news will start popping up right? It feels like it's taking foreeever.

Now that we have a full image of the suit, I can safely say I'm a bit torn on it. The upper half looks great, but the bottom half looks a little too basic. I feel like there should have been more highlights around the legs.

Still absolutely loving that suit design. It's gorgeous.

Also for the "Number theory" people.
If you turn the Z in Zi-O sideways, It's Ni-O or 2-O as in 20. :lolol

Or you know the Z also looks like a 2. Plus for number theory wouldn't Zi-O be 11?

If Masahiro Inoue's schedule allowed for it, I would honestly love it if Decade's prominence on that promo poster meant he'd be a supporting character in Zi-O.

It'd be a really clever full-circle from his own series where Kuuga acted as a supporting character/rider.

Number theory has always been off by one. W wasn't 2, W was 11.
So it's always been for the double digits added together. 11=2(1 side each is a person, so 2 people make 1 rider), 12=3(3 coins). 13=4(Fourze uses four switches), 14 = 5(wizard uses rings, 5 fingered henshin device) etc. So Zi-O resets the count like a stop watch clearing the numbers.

19 is back to 1(1+9=10, 1+0=1, the double sided rider is 1 person), and 20 is still 2(2+0=2, the show starts off with 2 riders that play with the numbers that effectively ends number theory).

Number theory has always loved to mess with the count like that though.
Even with Faiz, it wasn't 5, it was 4. Though it did toy with how 555 is all made up phone numbers. (Which oddly enough, is an american hollywood thing predominately...) Same as how Hibiki was 6 and about Oni, yet the 6 thing for devils/demons is also a more American/European thing. But then the show was steeply immersed in Japanese lore and cultural aspects to counter balance that.

Surprising thing about number theory is it does date back to Faiz. It wasn't noticed until the blatant W, OOO, Fourze, and Wizard though.
Kabuto as 7, Luck be a lady tonight, the Hiyori story. Den-O as 8 traveling in time through infinite possibilities. Kiva was 9, the german word for no, and about Vampires(let me bite you!). Decade was 10, cause a decade is 10.

They've been doing this for much of Heisei. W was also the 20th series, but 11th of Heisei. Double 1s. Same as how decade was 10th of Heisei but 19 overall. 1+9 and it started with Kiva appearing. Number theory is more involved than many think when you really dive into it. It's straight up chalkboard style equations. Like what Build uses to make gadgets.