I'm not sure if there are any German fans here on HSDKFans (or anywhere else for that matter), but in case you exist and you haven't heard about it yet.
The old Kenichi tv series from 2006/2007 is going to air on a channel called ProSieben MAXX starting from March 13, Monday - Friday at 18:00. (Source)
It'll be released later on dvd(?)/bd(?) by Peppermint Anime.
No news about the manga which remains translated only into French and Italian (and 5 volumes in Russian).