hey dude watch out your language.
please don't answer on behalf of intel technologies.
i5 is not C2D's replacement.


Intel Sales Representative,
Ken.

yea there's no replacement for C2D.
C2D is still mainstream product of Intel Technologies.
However there's another new mainstream product which on the market we called i5 in mid-end specification.
Nowadays Intel was on the path spreading i5 among the markets and able to distribute out better processor and less power consumption processor, core i5 with reasonable and affordable price.
Meanwhile, fellows will follow the trend and the strategy applied from Intel Technologies.

Intel Core 2 Duo will not be replaced.
Instead of you writing C2D will be replaced, I would kindly and strongly recommended and advise you to speak in this way:
Intel Core i5 is going to take down the mainstream market now.


In final words,
Product won't be replaced,
unless Market.