I contacted kahr about the style and time frame of the new p380 with night sights and they sent me this email.
"The night sights will be a three dot tritium system just like our other pistols. That model probably wont start shipping for a few months. If you can find a day sight version, I'd pick that up. The difference in price between that and the night sight version will actually cover buying the ngiht sights and getting them installed anyways."