To my knowledge the relevant WRC-12 document contains no timing.
I assume this means that it can be in effect after WRC-12, depending on how fast the administrations work.
The 471-479kHz allocation is on a NIB (to NDB's).
Power will be limited to 1W EIRP, but allowing 5W EIRP for (parts of) countries that are at least 800km from the border from a list of about 30 countries:
Algeria, Saudi Arabia, Azerbaijan, Bahrain, Belarus, China, Comoros, Djibouti, Egypt, United Arab Emirates, the Russian Federation, Iran (Islamic Republic of), Iraq, Jordan, Kazakhstan, Kuwait, Lebanon, Libya, Morocco, Mauritania, Oman, Uzbekistan, Qatar, Syrian Arab Republic, Kyrgyzstan, Somalia, Sudan, Tunisia, Ukraine and Yemen.
These countries are also "no go" for the amateur allocation.

73, Rik  ON7YD - OR7T

________________________________________
Van: [email protected] [[email protected]] namens Albert [[email protected]]
Verzonden: dinsdag 14 februari 2012 17:15
Aan: [email protected]
Onderwerp: Re: LF: Re: WRC-12 Approves the New 472-479 kHz Amateur Radio Allocation

Op 14-2-2012 16:51, mal hamilton schreef:
> MF GRP
> When do we QSY. Antenna to extend for lower freq and VFO to retune
>
> de mal/g3kev
>
> ----- Original Message --
It takes about 1,5 years to get these things implemented, so you will
have some time to make the changes.

Albert