Mitesh, there is a massive difference between the 5D and 5D mk2 release you knew for one when you bought yours one would succeed soon, also the 5D is 3 years old or there about again you knew it was well over due for replacement..... also you are getting a 5D at a massive discount these days, where as a new 5D would be £1600-00 upwards, the 50D is being released for less than the 40D was.
I don't own a 40D now, (In Fact I upgraded form the 40D, for better low noise now almost wish I had not) but tbh I do feel for people who bought it recently or even a yr ago to have it superseded by such an upgraded body,,,,,,,,,,,,, in fact lets even compare it to a 1D MK3, in my books it has everything the 1D MK3 should have had 15mp etc.
So personally I am somewhat annoyed at Canon, especially after all the 1D MK3 focus issues,,,,,, CANON quite clearly have on interest of their existing Customer base, only on getting new sales over Nikon.
But we will see how it all pans out.
If Canon don't release a new 5D before the end of the year, I will either pursue Film on a FF, or get a Nikon D700
Canon have only themselves to Blame, in there Greed and poor excuses all this would not exist if they had released a great 5D upgrade 6 months ago (and easlily could have), instead of telling us there is no competition so no replacement needed....... TBH I am pretty peed off at Canon atm