Looks like this new release already depends on kde frameworks 5.38, so we'll need to wait for that first.

It was released today on F26/27 updates-testing.

BTW, I successfully built it with the following diff and it works:

--- kde-connect.spec.orig       2017-10-04 15:16:21.000000000 +0300
+++ kde-connect.spec    2017-10-05 12:14:21.907413038 +0300
@@ -39,7 +39,7 @@
 BUildRequires:  qt5-qtx11extras-devel

 Obsoletes: kde-connect-kde4-ioslave < %{version}-%{release}
-Obsoletes: kde-connect-kde4-libs < %{verson}-%{release}
+Obsoletes: kde-connect-kde4-libs < %{version}-%{release}

 # upstream name
 Provides:       kdeconnect-kde = %{version}-%{release}
@@ -126,6 +126,8 @@
 %files -f %{name}.lang
 %license COPYING
 %{_kf5_bindir}/kdeconnect-cli
+%{_kf5_bindir}/kdeconnect-handler
+%{_kf5_bindir}/kdeconnect-indicator
 %{_kf5_datadir}/plasma/plasmoids/org.kde.kdeconnect/
 %{_kf5_datadir}/knotifications5/*
 %{_kf5_datadir}/kservices5/*.desktop
@@ -138,8 +140,9 @@
 %{_datadir}/appdata/org.kde.kdeconnect.kcm.appdata.xml
 %{_datadir}/applications/org.kde.kdeconnect.kcm.desktop
 %{_datadir}/applications/org.kde.kdeconnect.nonplasma.desktop
+%{_datadir}/applications/org.kde.kdeconnect.telhandler.desktop
 %{_qt5_archdatadir}/qml/org/kde/kdeconnect/
-%{_kf5_docdir}/HTML/en/kdeconnect-kde/
+%{_kf5_docdir}/HTML/en/kdeconnect/

 %post -n kdeconnectd
 %{?firewalld_reload}

kde-connect-1.2-1.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-7a2e7d3615

kde-connect-1.2-1.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-7a2e7d3615

Could you please correct the typo in the spec file -
Obsoletes: kde-connect-kde4-libs < %{verson}-%{release}

verson -> version.

Thanks,
http://pkgs.fedoraproject.org/cgit/rpms/kde-connect.git/commit/?id=324c91daae31e1f7d6d7e9b6fdd862ec07868575

kde-connect-1.2-1.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.

kde-connect-1.2-1.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-d9fdf105c6

kde-connect-1.2-1.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2017-e2c6994532

kde-connect-1.2-1.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-d9fdf105c6

kde-connect-1.2-1.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-e2c6994532

kde-connect-1.2-1.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.

kde-connect-1.2-1.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.