The new 7speed should of course be an improvement but Noticeable faster and smoother? You sure you're not quoting some press release here? I can hardly feel the changes in the DSG6, as for speed, well let's say I never thought it was slow shifting? Pretty much the opposite. And LED offering noticeable benefits? Bi-xenons on the mk7 CS/GTI/R work fine for me and there's no road lights in most areas around here due to wildlife preservation purposes. Never thought they were lacking in power or range and let's wait to see the LEDs in action first, no? There must be some "new car beats everything else" type of enthousiasm in this post so I'll not argue any more, that's a sacred feeling 
To answer your first question - on an Audi forum, owners of the facelift S3 have reported that their new 7 speed DSGs feel 'noticeably faster and smoother' than their old 6 speed DSG.
To answer your second question - my parents have LED headlights. They are definitely brighter and reach further than my Xenons and the Xenons on my wife's A3. Though as you say the Xenons are very good. I also read a review from another driver saying that the Dynamic Light Assist was excellent and really made a big difference.
As for your last comment... seriously? After all your "I own it, so it is the best" comments! 
Oh, I missed that reply. Sorry but you say "facelift owners in an Audi forum". I spent some time in a few forums back when the S3 was in my plans and with a few exceptions, the "impression" comments in that place are not to be taken seriously. It's the place where most owners also found that the S3 was handling superb and as for the smugness well, you'd think that if one perfect car existed that would be every Audi... As one said already, hard data on acceleration where traction or tyres are not the major factor (and by that i don't mean 0-60 in a FWD car \) would be welcome to really see what difference the new 7 speed makes.
PS. Your last comment doesn't make any sense at all. When and where did I ever say that what I own is the best?
Feedback on the driving and behavior of the car I
already live with for almost a year is something rather expected in forums (let alone that most of those findings haven been confirmed afterwards by other owners). You are describing the benefits of some pretty quantifiable upgrades like the new lights and the gearbox (nothing subjective as looks) with the certainty of a long time owner without probably having even been inside a FL car yet
Get your car, try it and then let us know how it is, isn't that a more sensible thing to do than just replicating promotion quotes before even doing one single trip in yours?
