  We discuss our current progress in studying a sample of z>0.8 clusters of
galaxies from the ROSAT Distant Cluster Survey. To date, we have Chandra
observations for four of the ten clusters. We find that the morphology of two
of these four are quite regular, with deviations from circular of less than 5%,
while two are strikingly elliptical. When the temperatures and luminosities of
our sample are grouped with six other high-redshift measurements, there is no
measured evolution in the luminosity-temperature relation. We identify a number
of X-ray emitting point sources that are potential cluster members. These could
be sources of intracluster medium heating, adding the entropy necessary to
explain the cluster luminosity-temperature relation.
