The subject says all. But in case some do not know or forget:
a. Xojo 2018r4 was released today,
b. In the release notes you will find:
53845 Framework » All Added URLConnection class (as a replacement for Xojo.NET.HTTPSocket), see documentation for details.
53845 in Feedback returns nothing and no link is done for URLConnection.
In docs: not found,
in developper: not found.
In HTTPSocket : no deprecated" nor link to URLConnection.
I certainly loose something, somewhere or must change my glasses (ask for new eyes ?).