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Kelly and Kirshner look at the SDSS images and spectra of the host galaxies of more than 500 nearby supernovae. Seems like an interesting complement to the SNLS host studies, I'd be interested to hear from Mark where this one fits. They can resolve the galaxies very well, so can make statements like "the SN Ic-BL and SN IIb explode in exceptionally blue locations" :-)

Abstract: In the standard cosmological framework, the Hubble diagram is interpreted by assuming that the light emitted by standard candles propagates in a spatially homogeneous and isotropic spacetime. However, the light from "point sources" -- such as supernovae -- probes the universe on scales where the homogeneity principle is no longer valid.