To add new announcements in WHMCS, follow these steps:

1. Log into the WHMCS Admin Area.
2. Go to Support > Announcements from the top menu.
3. Click on Add New Announcement in the top right corner.
4. Fill in the Title, Announcement Content, and select the Display Date.
5. Optionally, set the SEO URL and enable Multilingual Support if needed.
6. Once done, click Save Changes.

Your new announcement will now be visible to your clients on the front end.