  We study the new physics (NP) implications of the recently reported 3.2 sigma
Standard Model (SM) deviation in the like-sign dimuon asymmetry at the
Tevatron. Assuming that new physics only enters the B(s) mixing amplitude we
explore the implications for generic new physics, general supersymmetric (SUSY)
models and also SUSY SU(5). In the case of SUSY SU(5) we exploit the GUT scale
relationship between slepton and squark soft masses to predict rates for lepton
flavour violation (LFV). The predicted rates for tau --> mu + gamma are found
to be detectable at future Super-B factories.
