  A complete analysis of isospin breaking in K to 2 pion amplitudes, including
both strong and electromagnetic corrections at next-to-leading order in chiral
perturbation theory, has been achieved recently.We discuss the implication of
these effects, together with the previously known chiral loop corrections, on
the direct CP-violating ratio epsilon'/epsilon. One finds Re(epsilon'/epsilon)
= (19^{+11}_{-9}) 10^{-4}.
