najava

1. announcement; notice
   Inspekcija je došla bez najave. — The inspectors came unannounced.
   Prema najavi ministra, plate će porasti od januara. — According to the minister's announcement, salaries will go up from January.
2. (of a film or show) trailer; promo
   Pogledala sam najavu za novu seriju. — I watched the trailer for the new series.

"Bez najave" means "without notice, unannounced".