A source close to Sony has confirmed to MCV that the reason behind the more recent of Gran Turismo 5's delays is the implementation of both 3D and Move compatibility.
The news helps to explain the somewhat bewildering claim made by the game's chief designer Kazunori Yamauchi earlier this month that the game, which has been in development for several years, is still only 90 per cent complete.
Rumours of both Move and 3D compatibility first arose in April when Yamauchi confessed that Polyphony Digital is always attuned to new technologies”, adding that if there are display devices or peripherals that seem interesting, I'm sure we'll work to support them”.
The exact timeframe of Sony's plans for Gran Turismo 5 remains a mystery, but an E3 reveal is certainly not out of the question.
UPDATE: Sony has provided MCV with the following statement – "We will be announcing further details of Gran Turismo 5 in June in Los Angeles during the Electronic Entertainment Expo. Until that time we cannot comment on rumour or speculation."