  We develop generalized coherent states for a class of nonlinear oscillators
with position-dependent effective mass in the context of the Gazeau-Klauder
formalism and discuss some of their properties. In order to investigate the
temporal evolution we first explore the statistical properties by means of
weighting distribution and the Mandel parameter. It is found that the temporal
evolution of the coherent states may exhibit the phenomena of quantum revivals
and fractional revivals for a particular choice of position-dependent mass
oscillator.
