A source at Polyphony Digital has confirmed to website MCV that the ongoing delays to Gran Turismo 5 are due to the implementation of both Move compatibility and 3D technology.

Rumours around the compatibility of both Move and 3D have circulated ever since Gran Turismo designer Kazunori Yamauchi said back in April, “We're always attuned to new technologies. If there are display devices or peripherals that seem interesting, I'm sure we'll work to support them.”

Sony responded to MCV’s article by stating, “We will be announcing further details of Gran Turismo 5 in June in Los Angeles during the Electronic Entertainment Expo,” before adding the the standard boilerplate: “Until that time we cannot comment on rumour or speculation.”