"Someday I will be talking to him."

Translation: Kiedyś będę z nim rozmawiała.

[IE99]

Is there a difference in meaning when rozmawiać is used instead of rozmawiał or rozmawiała?

[immery]

no difference, only personal preference and sometimes hiding gender of the subject.

I've read somewhere that women are more likely to use infinitive, while men are more likely to use past form (because of the one extra syllable in feminine past form).