Earlier this year Blu-ray discs officially Unfortunately, there’s still one major roadblock ahead: size. While the discs themselves are no harder to manufacture than current Blu-ray media, at nearly 3x the thickness TDK's new discs face an issue with the optical lens when trying to read the inner layers. The company believes the technology will scale down, though, and hopes to commercialize it as an affordable storage solution for home users as well as businesses in a number of different markets.