If you're a Collective managing a Roster of other accounts (an agency managing artists for example), or if you're a single account that's part of a Roster (such as an artist associated with an agency), you now have the ability to transparently share your private contacts with each other for better collaboration.

For Collectives with a Roster
​In your Roster section towards the bottom of your permissions, you'll now see an option to Share Contacts:

Once shared, the Contacts will be instantly seen by the other account in their Contacts section.

For Single Accounts In a Roster
​Head to your Settings under the Privacy tab, and towards the bottom you'll see the options to toggle Shared Contacts on or off for each Collective you're associated with:

Note: Sharing Contacts is defaulted to "Off" for now, so be sure to toggle it "On" if you wish to share them. (Any private notes you've added to each Contact won't share and will remain private to you only.)