I'd say with all the new dslr's being launched at the moment competition is really hotting up and it is not limited to Nikon v Canon either ! 

Nikon really need to get their supply problems sorted it was the major factor in me not going with a Nikon brand DSLR when I made a purchasing decision recently.

Hopefully the increased competition from: Pentax, Sony, Olympus, Fuji and the others, will shake up Canon too.

So many new cams announced or about to be announced at the moment.

And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies live;
Their heads are green, and their hands are blue, And they went to sea in a Sieve.

Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html