I highly doubt it'll be referenced. It was my impression that Gohan wrote that book after Goku completely exited from the setting; you know, after GT. After all, if it was written before, why weren't their a bunch of humans besides Goku's friends flying around Earth and shooting energy blasts? And Super has shown that Gohan is still only getting his feet wet in the science scene so far.
As far as the canonocity of Online goes, Toriyama is notoriously uncaring of the entire concept of canon anyway. He forgets characters and events for years, and will happily crossover any of his works with each other. He does not give a shit, he just wants to have fun. That said, he did write for Online, and a lot of Online's plot elements were reused/continued in the Heroes and Xenoverse game series. So it's not out of the question that those elements are out of the picture entirely. We might get to see Mira and Towa pop up in Super at some point.
Edit: According to the Dragon Ball wiki, GT takes place in the years Age 789 and 790, and Groundbreaking Science was published in 804, 14 years later, with the inspiration being Goku's last death. So there's no reason to think that canon dictates that the book will be referenced in Super. It is entirely up to Toriyama's whims.
As far as the canonocity of Online goes, Toriyama is notoriously uncaring of the entire concept of canon anyway. He forgets characters and events for years, and will happily crossover any of his works with each other. He does not give a shit, he just wants to have fun. That said, he did write for Online, and a lot of Online's plot elements were reused/continued in the Heroes and Xenoverse game series. So it's not out of the question that those elements are out of the picture entirely. We might get to see Mira and Towa pop up in Super at some point.
Edit: According to the Dragon Ball wiki, GT takes place in the years Age 789 and 790, and Groundbreaking Science was published in 804, 14 years later, with the inspiration being Goku's last death. So there's no reason to think that canon dictates that the book will be referenced in Super. It is entirely up to Toriyama's whims.