I've always remembered it being 9 (at least in the UK), if the limit has been 4 recently then they must have just changed it back.

As the credit card surcharge is per person booking 9 adults would mean a £27 cc surcharge and if for some reason you wanted paper tickets an additional £225 surcharge!

I'm not sure if offering paper tickets online is an enhancement (I can't see any reason for them) but being able to opt for a paper ticket online seems to have sprung up on the UK website sometime over the course of the year.

As for the 738 and 739 seats, there seems to be a lot of positive comments here about these seats. These seats are the lightweight seats that are 1kg less than the previous seats. I remember a lot of negative comments about these when they were launched, have we grown to like them or have the people who hate these seats just not commented on them here? Then again getting a seat to please everyone can be awkward, but it's good to see that they've managed to please some with the new seat (at the expense of losing the 2-3 ES seating that was there before it in the 739 ).

The KL website seems to be more unreliable this year, sometimes totally impossible to book with Firefox but I've better luck with Safari than most. When it does work there's been some improvements such as the ability to select the 100% mileage fares easily. On the bad side there's still this long running bug where sometimes it only lists 3 options (Economy, Econ Flexible, Biz) and this is the only option when making a multi leg booking.

On the positive side you can book AF fares now on the KL site, although this is not integrated as well as I'd like it still means I can fly KL one way and AF the other. This has been useful for CityJet flights where I can fly AF one way and return on KL on a Sunday when CityJet's schedule is poor.