With the apt-get update and dist-upgrade process the preinstalled m2p version of kodi will be completely replaced by the jarvis version from the repository.
The kodi integration in the m2p web interface works for me (it shows the recent version correct (16.0-2jessie)).
The jessie image has already (marked as beta) arrived in the dowlnoad area.
There is an manual update path from wheezy to jessie: https://www.max2play.com/forums/topic/update-auf-debian-jessie/
But after the official release has arrived I would prefer the start with a fresh image and restore the old settings.