you can use Yumex (instead of PackageKit). Yumex has an option to
minimize to system tray, there will be an icon then that can show the
availabilty of updates.
Date: Thu, 14 Aug 2014 10:29:27 -0700
From: ToddAndMargo <ToddAndMargo(a)zoho.com>
To: Fedora Xfce <xfce(a)lists.fedoraproject.org>
Content-Type: text/plain; charset=utf-8; format=flowed
Under xfce fedora core 20, is there some kind of "item"
that can be added to Panel 1 to alert you and couch you
through your updates?