If it's the clutch going out you would feel slippage through each gear. Does the car pull good and hard as you are moving up the gears? Tach should not move way faster than the speed if I remember correctly which would indicate a slipping clutch.
I to have a bit of a "judder" when taking of and if I gently push the gas or give more aggressive gas it does not do it. It only happens in a certain position and if it is happening I can apply more gas and it stops the judder.
This should be a software update I would think.