From TV-Browser Wiki
After each TV-Browser update the News plugin will check for the latest news and display it in a dialog. News items may include announcements about new TV-Browser releases, plugins, new channels and other important information.
The latest news items will be marked with a small icon. By clicking in the checkbox on top of the dialog you can hide or display past news.
The first time you run TV-Browser the most recent week's news will be downloaded. All subsequent news items will be downloaded. Downloaded news items will be automatically deleted after 90 days.