I was on Instagram and i clicked in one of the tags. I found these.

I'm pretty sure this is just a random artist, assuming how the fusion design would look like

The design is great!!! But it looks more like Gemgem and Blaze's fusion. Because the surrounding is like lava and part of the logo looks like Blaze's

Mr. Nizam is probably telling Mr. Anas not to post the full cover of isu 15 😂

Mr. Anas did it anyways 🤣🤣🤣

Something about Mr. Nizam and Anas kept mentioning the name 'Gentar'

It could possibly be the fusion name

And for the title of the isu. As how i translated it, 'Fight without Fear'.

Maybe, just maybe it's a war like isu 14. The gang will be traveling to another planet and protect it, aswell helping Bbb absorb the power to unlock his next 3rd tier element

Off topic:

Has anyone ever think we'll be able to meet Toma- Amato in one of the isus?