The new feature will take several weeks to go live for all LinkedIn members, and push notifications for Android and iOS devices are also in the works. It's all a part of LinkedIn's grand redesign plans to simplify site and grow it as an everyday tool. This is not a bad tactic for LinkedIn if it wants visitors to come back to the site more frequently.
The company wants to be the place where everyone goes to get news and connections that are relevant to their professional lives.