My understanding of what was quoted and the current situation is as follows:
- It is a fact that for GT5 Prologue, the paddle shifters and the clutch work on the G25, and for the G27 the paddles do NOT work but the clutch does. So, both have functional clutches.
- It is a fact that the button assignment for the G25 and G27 took place under the DFP menu in GT5 Prologue.
- It is a fact that for the later-released GT5 Academy TT at Indianapolis in the 370Z, the paddles on the G27 worked. For this demo TT the clutch was disabled for G25 and G27. Button assignment for G25 and G27 still took place under the DFP menu.
- It is a fact that through certain modifications, in GT5P with the use of the G25 (and I assume the G27) there was a way to flat-shift using the clutch. This is most obvious in the online time trial leaderboards from users |_|AmiR|_| and |_|UfuK|_| who modified their equipment to allow shifting up without the loss of any power, hence massively better time trial times. This was also possible in races. This in my opinion, is the unfair advantage that they are referring to.
- In the first GT Academy, clutch use was allowed. In the GT5 Academy TT the clutch was disabled, possibly due to the above advantage the modification brings to the G25/27 user's upshifting.
My interpretation is that as a result of this modification's massive advantage over other wheels in regards to the G25 and G27, Polyphony Digital cannot "Officially" support these wheels as Logitech have not created firmware to eliminate the advantage of this modification. I therefore believe that you will still be able to use your clutch on your G25 and G27 in Gran Turismo 5, and maybe the modification to allow flatshifting will still work.
However, if PD go so far as to actually completely disable the clutch for G25, and you have purchased a G27 or G25, the paddles will still work, the pedals and build quality will still be superior to that of a DFGT.
It's my opinion that the clutch will work in GT5, they just cannot officially support the wheels due to the unfair advantage of the modification.
All the best
Maz