PW3 (2015) serial Jailbreak working ?

Hi,

my PW2 has given up on me (or rather my kid has killed it).

I am looking to replace with the PW3 but i really need calibre and collections manager.

Is a jailbreak available yet, even using a serial connection ?

Searches don't really show that there has been any success yet, other than suggesting it may be possible.

Thanks for any reply

:help: