One of the best ways to keep up with developments in the legal world is to pay attention to legal blogs.
Another good way to keep up with news in the practice area you're interested in is to set up news alerts.
BNA Law Reports
After signing in, click the header on the right that says “Manage Email Notifications”, then select and add practice areas that you’re interested in. You can choose to receive news as it happens, or in a digest form. Don’t forget to go to allow BNA to send alerts to your email address if you want to receive them that way. To find that setting, go to the Saved Searches & Alerts tab at the very top, and select the “Settings” tab.
You can also automatically receive news items related to your search terms with these tools: