Still think the the lower running costs of the P2006 will replace alot of old iron. We are still on the mark one version of the aircraft. Things like low service ceiling and range may only improve with further revisions.
I would be very surprised in Tecnam don't put the new fuel injected rotax on the airframe in 912 and all probability 914 form. This will reduce fuel burn further, increase the range and possibly increase the service ceiling.