I have to agree with you there, for the most part of the announcements I was falling asleep :/ the 3D turn by turn is the main thing that I liked out of it and I already have that in my car so it wont even be much use to me, but some of the other features such as "Do not disturb" for me will come in handy but I have always just put my phone on silent during the night and vibration off so I dont see how better this will be..
I was impressed with the siri start of the WWDC though and even though ios 6 is only out for devs I would not want to install it any way as it will likely have many bugs (and what else would you expect from a major ios beta 1?) The ipad 1 wont receive it and if I am not mistaken neither will the 3GS and now the 4 is on its last major ios update so my GUESS is that the betas and GM will be spread out until a new iphone release in sept/oct.
I was more impressed by the new laptops and by mountain lion for only 20 bucks that we will get in July, BUT ios 6 will have over 200 features and I am sure apple did not even mention half of that.. so there will be some nice surprises along the way. and for siri user on the 4S and the new ipad (soon) will have more siri functions like opening apps with siri I loved that, even though I dont have the 4S lol and of course not to mention the notification centre twitter replies... There are a lot of little things that will be very convenient..
you can watch the whole keynote from apple:
iClarified - Apple News - Watch the Entire WWDC 2012 Keynote Now! [Video]