Resolution 1 adopted by the CGPM in 2011 takes note of the CIPM's intention to propose a future revision of the SI.
It explains that the intention is to propose a revision such that:
the International System of Units, the SI, will be the system of units in which:
- the ground state hyperfine splitting frequency of the caesium 133 atom (133Cs)hfs is exactly 9 192 631 770 hertz,
- the speed of light in vacuum c is exactly 299 792 458 metre per second,
- the Planck constant h is exactly 6.626 06X x 1034 joule second,
- the elementary charge e is exactly 1.602 17X x 1019 coulomb,
- the Boltzmann constant k is exactly 1.380 6X x 1023 joule per kelvin,
- the Avogadro constant NA is exactly 6.022 14X x 1023 reciprocal mole,
- the luminous efficacy Kcd of monochromatic radiation of frequency 540 x 1012 Hz is exactly 683 lumen per watt,
(i) the hertz, joule, coulomb, lumen, and watt, with unit symbols Hz, J, C, lm, and W, respectively, are
related to the units second, metre, kilogram, ampere, kelvin, mole, and candela, with unit symbols s, m, kg, A, K, mol, and cd, respectively, according to Hz = s1, J = m2 kg s2, C = s A, lm = cd m2 m2 = cd sr, and W = m2 kg s3,
(ii) the symbol X represents one or more additional digits to be added to the numerical values of h, e, k, and NA, using values based on the most recent CODATA adjustment
Resolution 1 also presents the intention to express the definitions of all the base units using a uniform "explicit-constant" formulation.
For full details the reader is referred to the formal text of the Resolution.