The new "Your Phone" app is supposed to provide data from m Transfer iPhone to a Windows computer. The data includes photos, texts and much more. Even if the connection here should be much better, it lacks the support of an important iOS feature: iMessage. Microsoft interviewers Joe Belfiore and Shilpa Ranganathan said in an interview with American website The Verge that "some things are harder to get into the new Dein-Phone app than others" and specifically referred to the news here.
Apple finds it particularly difficult for developers to access the news, while photos are not a problem. Microsoft therefore certainly wants full support of iMessage on Windows computers. However, according to Ranganathan, "respectful treatment of the (Apple) ecosystem" is a priority.
Currently one has not approached Apple in this regard. Whether Apple faces such a partnership or a news release positive, of course, is questionable, since the interfaces have been deliberately blocked for third parties to potential vulnerabilities not even open. Even Tom Warren of The Verge believes that the new Windows app will work much better for Android devices than for an iPhone.