Interesting, mine has the drilled offside vent and also has an update code in the service book. I will look it up when I get chance. What I find strange is all the talk of updates but they aren't really communicated to us unless we ask or report something.
Mine is in on the 25th for loss of coolant and a few other little niggles, maybe i will ask for a list of all updates then.
Thanks for the info!
Which dealer are you taking it in to?