Coulndt find much either.
kTerm you can google and there is an updated package for 5.6.5
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But usually to use ssh or telnet you needed USBNetwork (
https://wiki.mobileread.com/wiki/Kind..._networking_UN ) and @NiLuJe hasnt updated the thread where USBNetwork is provided with information on 5.6.5 - so the most current version of it might work, but then it might not -- so right now I would wait for confirmation of some kind.
Also - some kind of "rescue package" would be nice for first time JB devices on 5.6.5, when you start giving people shell access..
But its early days..
TLDR; Tutorials on enabling USBNetwork and a "rescue package" (if possible) might be needed for new users.