  We present a summary of results of the joint CP-PACS and JLQCD project toward
a 2+1 flavor full QCD simulation with the O(a)-improved Wilson quark formalism
and the Iwasaki gauge action. Configurations were generated during 2002-2005 at
three lattice spacings, a~0.076, 0.100 and 0.122 fm, keeping the physical
volume constant at (2.0fm)^3. Up and down quark masses are taken in the range
m_{PS}/m_V~0.6-0.78. We have completed the analysis for the light meson
spectrum and quark masses in the continuum limit using the full configuration
set. The predicted meson masses reproduce experimental values in the continuum
limit at a 1% level. The average up and down, and strange quark masses turn out
to be m_{ud}^{\bar{MS}}(\mu=2 GeV)=3.50(14)({}^{+26}_{-15}) MeV and
m_s^{\bar{MS}}(\mu=2 GeV)=91.8(3.9)({}^{+6.8}_{-4.1}) MeV. We discuss our
future strategy toward definitive results on hadron spectroscopy with the
Wilson-clover formalism.
