2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/222200The current status of B -> Xs gamma decay rate calculations is summarized. Missing ingredients at the NNLO level are listed. The global normalization factor and non-perturbative effects are discussed. Arguments are presented that results for the cutoff-enhanced perturbative corrections have been misused in Ref. [15] by applying them in the region E_gamma \in [1.0, 1.6] GeV, which means that the corresponding numerical effect on BR(B -> Xs gamma, E_gamma > 1.6 GeV) is unreliable.6 pages, 4 figures, contribution to the Proceedings of the IXth International Conference on Heavy Quarks and Leptons (HQL 2008), Melbourne, Australia, June 5-9, 2008. Note added and refs updated in v2High Energy Physics - Phenomenologytext