EA and Sony have announced that starting today, May 27th, a free trial version containing the whole Battlefield 4 base game will be available for PS Plus subscribers. Unfortunately, this deal is only available for the PS3 version of the title, and only in North America.
According to PlayStation blog, from the moment the game starts the first time, players will be able to play 20 hours before the title expires. All the title's options will be available to play, including the single-player campaign and all online modes.
Ever since its launch, Battlefield 4 has been plagued with several bugs and glitches, specially in the multiplayer component. Despite Dice's several patches, the multiplayer remains unplayable for some players due to all these issues.
Source: Playstation Blog