I always hear people keep saying that Hendrix was going into jazz before he died.... I don't see it that way really. The direction I strongly see him taking was towards a funk-rock (and more soulful RnB) style like Funkadelic and Eddie Hazel. Look at the songs Hendrix was recording before he died, while working on his next album:
Dolly Dagger
Izabella
Stepping Stone
Message to Love
Freedom
Earth Blues
Night Bird Flying
Straight Ahead
etc... So many of his last songs were funk-rock, with some soul/RnB mixed in. In comparison there's not so much showing he was going towards jazz, apart from "talks" with jazz guys like Miles Davis that went nowhere, and maybe a jazzy song like "South Saturn Delta". But the unreleased songs he was working on for his album in 1970, leftover material from BOG and his change in tone/sound all point to me like he was going towards a more Funkadelic sound (I know Funkadelic came after), not jazz.
Maybe he would've gone to jazz at one point because he tended to flirt with the jazz sound every now and then, but I think Jimi was getting more into funk, maybe trying to connect with the black audiences he felt abandoned him, as he tried with BOG.