Before setting hovercards to default for all users (except those who use the navpop gadget) we should start with a 4 week a/b test. We will establish a separate task for the actual A/B test enablement.
- Users who have HoverCards enabled by the beta features should continue to have them enabled
- the ability to do a partial roll-out, with sticky bucketing at the user (using device, browser as a proxy). In other words, each user is either in or out when using the same browser on the same device. This is required for the fundraising test we want to do before broader hovercard rollout. Any issues with implementing this, contact @AndyRussG or @Pcoombe.