That would work, but it's probably not what you want.
Instead, give every news item a date field. Whenever a new item is inserted, give it the current date (or use datetime so you can also add the time)
Then on your presentation page you can use a simple query to print only those items that are less than one day old, or less than a week, or less than a month...
Then you can also make an 'older news' button and let people search for items by date.
BTW: enum types are evil, don't use them.
A forum, a FAQ, what else do you need?