“…There is certainly room for significant improvements in view of KAON 2009! 2.3 Lattice progress on f + (0) and f K / f π and the extraction of V us As nicely summarised by Kaneko [17] and Juttner [18], in the last two years there has been a dramatic improvement in the quality of lattice simulations relevant to kaon form factors. The two main obstacles which so far prevented reliable estimates, namely the quenched approximation and the chiral extrapolation, have essentially been removed.…”