No, there is no chance to hop on and get involved in some Apex Legends cross-platform play on any platform at launch.
eSports consultant Rod Breslau stated on Twitter that the game will feature, "classes/heroes with unique abilities, maximum of 60 players per server, maximum of 3 players per team (trios) to complement each other".
Respawn Entertainment will officially show off Apex Legends Monday Morning starting with a teaser stream at 8:00 AM PST with the full game reveal followed at Noon. The first is the Jumpmaster system, which allows squads to choose where there are dropped on the map.
In a departure to its competitors, Apex Legends pits twenty squads of three against each other, bringing the total player pool to just sixty. Players can opt for characters like Lifeline, the battlefield medic who can shield teammates from harm as well as revive them, or tracker Bloodhound, who can see recent enemy movement via the map. Is it smarter to head straight for the most valuable loot and risk early conflict with other teams, or make for one of the outlying areas to plot an attack and let other squads pick each other off? All together it creates a battle royale experience unlike any other, complete with Respawn's commitment to top-notch quality and fun.
If reports are true, and it seems they are, Apex Legends will release for the PlayStation 4, Xbox One, and PC. "The Battle Pass is a seasonal system that rewards players with exclusive cosmetic items", reads the Apex Legends FAQ. It appears that Apex Legends will feature seasons and themed events similar to Fortnite, except that some of these events will add new characters to the game as well.