  We calculate the impact of quantum gravity-motivated ultraviolet cutoffs on
inflationary predictions for the cosmic microwave background spectrum. We model
the ultraviolet cutoffs fully covariantly to avoid possible artifacts of
covariance breaking. Imposing these covariant cutoffs results in the production
of small, characteristically $k-$dependent oscillations in the spectrum. The
size of the effect scales linearly with the ratio of the Planck to Hubble
lengths during inflation. Consequently, the relative size of the effect could
be as large as one part in $10^5$; i.e., eventual observability may not be
ruled out.
