are planned also at JParc and at Fermilab. The project to upgrade KEK-B into a Super- B factory, with a luminosity exceeding 5 × 10 $^{35}$/ cm $^{2}$s − 1 has just started, and an even more ambitious super- B project is currently under study in Italy. 

In Table VIII, based on data from Ref. [17, 18, 46, 91, 92], we show the possible improvements for a series of particularly significant B$_{s,d}$ , D , K and t observables, most of which have already been discussed in the previous sections. The future improvements refer to 10 fb − 1 at LHCb, 50 ab − 1 at Super- B , and two years of nominal data taking at NA62. The table is not comprehensive and the entries in the last two columns necessarily have significant uncertainties. However, it illustrates two important points: i) there are still several clean observables where we can expect significant improvements in the near future; ii) progress in this field requires the combined efforts of different experimental facilities. 

To conclude, we stress that the future of flavor physics is promising: 

• The technology to collect much more flavor data exists. 

• There are still several measurements which are not theory limited. 

• Most well-motivated TeV-scale extensions of the Standard Model predict deviations within future experimental sensitivities and above the SM theoretical uncertainties. 

The combination of direct discoveries at the LHC and a pattern of deviations in flavor machines is likely to solve the new physics flavor puzzle, to indirectly probe physics at a scale much higher than the TeV scale, and, perhaps to make progress in understanding the standard model flavor puzzle. 

Acknowledgments We thank Kaustubh Agashe and Zoltan Ligeti for comments on the first version of this review. G.I. is supported by the EU under contract MTRN-CT-2006-035482 Flavianet . Y.N. is supported by the Israel Science Foundation (ISF) under grant No. 377/07, by the German-Israeli foundation for scientific research and development (GIF), and by the United States-Israel Binational Science Foundation (BSF), Jerusalem, Israel. G.P. is supported by the Israel Science Foundation (grant #1087/09), EU-FP7 Marie Curie, IRG fellowship and the Peter & Patricia Gruber Award. 

[1] N. Cabibbo, Phys. Rev. Lett. 10 , 531 (1963). 

[2] M. Kobayashi and T. Maskawa, Prog. Theor. Phys. 49 , 652 (1973). 

