I really have a feeling that the Spaniards will win even with Germany's explosive form of late.
Spain has been so used to playing teams with 8 players behind the ball and waiting to counter. Portugal did that, Paraguay did that and so did Germany in the Euros 2 years ago.
Del Bosque should change his routine, take out 1 striker and put in an extra holding midfielder (Cesc?) just so he can upset Loew's planning with a bit of mystery.
As I've said before, Loew is a master tactician and Del Bosque would have to be a bit creative than the usual 4-4-2 (essentially a 2-2-1-3-2 linear attack).