"Chinese hordes" in Russian Far East is largerly a myth.
But the de-population problem is real and is a problem for political (sovereighnity over land) and practical (key industries) reasons.
There is some limited work related migration, but on temporary (tour) basis, the northern parts of China are also being de-populated due to the much the same reasons (old infrastructure, employement problems, climate).
Within the speach (it was towards the end) the really spicy bits were about the reform itself - for example Putin proposed banning people who ever had dual citizenship or foreighn residency from running, to ban people who resided (without residence permit) permanently abroad for 25 years from running. This may affect opposition members as many of they studied or recieved training abroad and/or have residence permits, dual citizenship.
p.s. seems that the translation is not yet complete, it may take a while I guess.
http://kremlin.ru/events/president/news/62582
full version but in Russian