As i said, there is all kind of nonsense flying in the air. Right now generals and MOD "sources" can whisper all kind of wishful stuff to news makers, but the fact is - in official 2015 procurement plan there is still no money for Su-35.
Regarding last source: the article is dated before 2008. Only by end February 2008 Putin, after celebration of first Su-35BM flight, publically suggested government to correct 2015 military acquisition plan, and consider including some SU-35BM in it. As you see, no Su-35BM purchase was ever planned by the time of article.
So far the plan wasnt corrected, and as i said all these flying numbers - 60, 182, 390 or whatever - are just as serious as 3 carriers by 2015 in russian navy.
I'm sure maximum 15-20 Su-35 BM would be acquired before 2013, and that only if no major export contract came.
There could be more Su-35BM acquired later, if PAK-FA will face too much delay and old Su-27 would run out of resource.