A new type of collection has been introduced to the game - the Crew Collections.
Here is how it works:
Basically, you can get collection pieces either by 1) asking for help 2) helping out your friends. However, it is not quite that simple.
Helping a Friend
When you offer to help a friend, you get around 1 hour to "find" the piece assigned to you in the mission. The job that you must complete has an orange timer beside it. The drop i rate is unfortunately very rare. As a result, it can take quite a few job completions to get your item, which can be tough within the hour time span.
Once you find the piece your friend is looking for, you will both get a copy of the item. You can help out 5 friends in a 24 hour period.
Additionally, you have to earn at least 1 piece from each collection before you can call for help on it, so you will have to help out friends who have other collections unlocked in order to get access to all the items.
It would seem that the job that you find the item in appears in the city you were last in, so try to accept this job in the street thug tier.
Asking for Help
When you ask for help, in order to get the item needed, you have to get your friends to help you and then actually have them procure the item within the hour! This will not happen often, since only 5 friends total can help you out and the item drop that they are looking for is pretty rare. However, since you can only call for help once every 48 hours (total, not once for each collection), odds are your friends will at least try to help you out in an effort to earn a piece for themselves.
Sets and Rewards
As noted above, it can be quite tough to complete these collections. It's certainly doable if you spend a lot of time playing and chasing down these collections, however, it does not seem to be much worth the effort at the moment:
Reward for the Prototype Carjacking collection: Koenigsberg S10 (vehicle; 30 attack, 46 defense).
Reward for the Theft of a Drone collection: Military Spy Drone (vehicle; 33 attack, 47 defense).
Reward for the Weapons Shipping Hijacking collection: Fox Hunter (weapon; 48 attack, 27 defense).
As it stands, collecting these items does not seem to be worth the effort given that these are not much better than top-tier loot pieces. If you really want to finish the collections and are a high level player, I'm sure it will be quite easy to trade high-end loot pieces for the collection pieces rather than collecting the pieces yourself.
Personally, I'm not going to even bother with these collections right now - the items just aren't worth the time spent. I'm sure in a week or two these collection pieces will plummet in value rapidly, and it will be easy to pick up a full collection set for a mere 10-20 high end loot pieces.