open /usr/share/enigma2/HD1R2-Zombi.mod/skin.xml and search for "folgt"... it should look like this:
<eLabel text="Es folgt:" position="815,2" size="100,25" font="Regular;22" halign="right" foregroundColor="red" backgroundColor="background" transparent="1"/>
change the red marked Es folgt: to whatever you want, save it and reboot enigma.