najavljivati

1. to announce
   Vlada najavljuje nove mere od sledećeg meseca. — The government is announcing new measures from next month.
   Voditelj najavljuje sledećeg gosta. — The host is announcing the next guest.
2. (of weather) to forecast
   Meteorolozi najavljuju kišu za vikend. — Forecasters are predicting rain for the weekend.
3. (of signs, events) to herald; to signal
   Tamni oblaci najavljuju oluju. — Dark clouds herald a storm.
4. (najavljivati se) to let someone know one is coming
   Moja tašta nikad se ne najavljuje, samo dođe. — My mother-in-law never calls ahead, she just shows up.

Usually refers to something that is still to come; for news already happened, objavljivati or saopštavati is more usual.