I was circumcised 3 weeks ago.
I can't answer for the sex life, although the orgasms achieved from masturbating have, so far, certainly been far more powerful.
However, as to whether these increased sensations are something that are likely to continue is a different matter, as it's as if I'm going through puberty again & having to re-learn how to masturbate. Whereas previously the glans would have been stimulated by the gliding motion of the foreskin, it is now mainly being stimulated directly, albeit with plenty of lube, although as the amount of foreskin removed was minimal, I do have quite a bit of remaining foreskin, which means I can sometimes manage to masturbate without the use of lube (although this can still be rather sore at times).
The point is, that although the glans is still extremely sensitive, over time this sensitivity is bound to diminish, so I imagine (regrettably) that the relative degree of the the orgasm is likely to diminish accordingly.