Earlier today, Sony revealed their list of playable titles that are coming to gamescom 2014. There are some notable surprises on the list including Journey for the PlayStation 4.
PlayStation 4:
  • Battlefield: Hardline
  • Bloodborne
  • CounterSpy
  • Driveclub
  • Surgeon Simulator
  • Middle Earth: Shadow of Mordor
  • Alien: Isolation
  • Diablo III: Reaper of Souls Ultimate Evil Edition
  • Lego Batman 3: Beyond Gotham
  • Far Cry 4
  • Guns Up!
  • WWE 2K15
  • NBA 2K15
  • Assaulrt Android Cactus
  • Pix the Cat
  • Nom Nom Galaxy
  • Nuclear Throne
  • Galak-Z
  • Project Cars
  • Disney Infinity 2
  • Hohokum
  • Helldivers
  • Destiny
  • Until Dawn
  • The Unfinished Swan
  • The Order: 1886
  • The Last of Us Remastered
  • Super Exploding Zoo
  • SingStar
  • Minecraft PlayStation 4 Edition
  • LittleBigPlanet 3
  • Killzone: Shadow Fall Intercept
  • Journey
  • inFamous First Light
  • Hustle Kings

PlayStation Vita:
  • Super Exploding Zoo
  • Soul Sacrifice Delta
  • Futuridium
  • Hatsune Miku-Projekt DIVA-F 2
  • Flame Over
  • Frozen Synapse Tactics
  • Final Horizon
  • Dragon Fin Soup
  • Lego Ninjago Nindroids
  • The Sly Trilogy
  • The Ratchet & Clank Trilogy
  • PlayStation Vita Pets
  • Murasaki Baby
  • Minecraft PS Vita Edition
  • Invizimals: The Alliance
  • Hotline Miami 2: Wrong Number
  • Hohokum
  • Freedom Wars
  • Entwined
  • Big Fest

If for some reason you don't believe me, you can check out the list for yourself at Sony's special gamescom 2014 page. A knowledge of German might help you navigate that page.