The latest iDrive system is called the 'CIC' or Car Infotainment Computer and arrived on the E70 X5 from September 2009 production onwards. It's not an unreasonable jump to assume that the E71 therefore got it at the same time. Most likely the earliest UK models will be around mid-October 2009 onwards to allow for deliveries to get here from South Carolina.
The CIC system is the one with the 80 GB HDD on board and also has a DVD player slot which can also be used to upload the maps from the 3 DVD set. Map updates from that point forward need a licence key unique to each installation and derived from the vehicle's VIN. The HDD can be used to store about 8-11GB of music uploaded via a USB flash drive. The partition size varies with production month. Owners complained it wasn't big enough so BMW increased the amount. The maps take more than 35GB!
The front end looks the same as far as I can tell, except for the iDrive Controller having more buttons. This is a CIC equipped X6......and it's mine! Actually as mine is (still) broken, pictures is all I have.....sigh
And this is the CIC Controller......
And this is the Nav on full width....
There was a further upgrade after Week 40 (beginning 4th Oct) 2010 with the arrival of the 'Combox Controller' which replaced the previous TCU for the telephone and brought added capabilities all in a single unit in the boot. Two more versions of the Combox have come out since which gave more functions with iDevices and now Internet capability.
For those that like looking at naked pictures, this is a Mark 1 COMBOX (hidden behind the left boot trim in an X6) exposed.
The other big change was the introduction of the 8-speed transmission from Dec 2009 production (not the 35d which was discontinued in early 2010), so you will see that on versions registered in January 2010 onwards. It was 'supposed' to bring about an extra 3-5mpg (according to the 'official figures') on the diesels (when mated to the 30d & 40d engine) and reduced emissions so lowering the VED Tax Band. The 40d brought a new turbo config and 306bhp PS to the 6-cyl 3.0L engine. I can safely say that the 8-sp box is the smoothest gearbox I have had the pleasure to have driven with. If you can, go for the 8- sp models.