Logitech has just dropped us word of an upgrade to its G25 steering wheel controller called the G27. It's pretty much the same thing, except for a few improvements to the original design.
Firstly, the G27 has six buttons on the face of the wheel, compared to the G25's six. They're user-programmable, so you can make them do whatever you like. Then there's the gear system - the G27 has a diagonal-cut (helical) gearbox, as opposed to the G25's straight-cut spur gears.
The G27 also has taller standoffs for the cluth and brake pedals, as well as horizontal adjustability, and a stiffer centering spring on the gear shifter with a "positive gear engagement feel". Lastly, there's ten new LEDs that can be used by game developers to convey non-essential info to the player.
The G27 costs £330, so it's for serious racers only, and it works with the PC, PS2, and PS3. It'll be available in September.