Nothing has changed regarding US citizens being able to purchase Cuban cigars. Travel and bringing things back, have relaxed. I'd think if/when the embargo was ever at a point where we could purchase without it being illegal, then it would be kosher to discuss sources.
With that being said, I'm not sure I'd be willing to divulge a source, for fear that everyone would fall in and limit what I was able to obtain. Reminds me of when Opus/Anejos were so scarce, that people held onto their sources.
Who knows, I don't see this happening anytime soon.