The Pentacon is going to happen from the 3rd to the 5th of November 2017 in Dresden and sure, it is a convention on science-fiction. (The address is: Kulturzentrum Palitzschhof, Gamigstr. 24, 01237 Dresden, Germany.)
Guests of Honour are:
Andreas Brandhorst, Dieter B. Herrmann, Angela Steinmüller, Karlheinz Steinmüller, Tassilo Römisch and Erik Simon.
The Pentacon is also the host oft he awarding ceremony of the Kurd-Laßwitz-Preis, a major German award on science-fiction.
In case you want to attend the Pentacon, please make sure to preregister!