Is there even a 2.7 release? I don't see one. It's just a never-ending development release...

Oh, wow! A new release! What joy!

http://lists.infradead.org/pipermail/hostap/2018-December/039069.html

"""
New versions of wpa_supplicant and hostapd were just
released and are now available from https://w1.fi/

This release follows the v2.x style with the release being made directly
from the master branch and the master branch moving now to 2.8
development.
...
"""