Is dynamic_reconfigure expected to be API stable for the C-Turtle
release?

How is the startup order controlled in a launch file? As far I can tell
the timing and order is intentionally indeterminate, so the nodes
parameters may not be set until the node is launched. Is this correct?

<launch>
  <node pkg="hokuyo_node" type="hokuyo_node" name="hokuyo_node"
output="screen">
    <param name="frame_id" value="/laser"/>
  </node>
  <node name="$(anon dynparam)" pkg="dynamic_reconfigure"
type="dynparam" args="set_from_parameters hokuyo_node">
    <param name="min_ang" type="double" value="-1.0" />
    <param name="max_ang" type="double" value="1.0" />
  </node>
</launch>

Is dynamic_reconfigure seen as a replacement for the current method of
setting parameters or should nodes support both methods for C-Turtle?