Deathstreaks are gone, but if you are worried about killstreaks, just pick up Support since they chain even if you die. They are also quite powerful, especially those with 9+ kills requirement
ah right, support streak it is then is there any information on what the streaks are? anyone got a link?
Scroll down till Support Strike Package. There are not all info yet, but since the game is going to be released in some hours i guess you will just read them in-game
Only the first person to the objective gets the bar as of right now. I assume they fix this, but I dunno.