Your Facebook fan page will automatically convert to the new Timeline design on March 30.
One of the biggest feature changes that many businesses are upset about is the removal of a default landing tab.
The good news is you can still have custom tabs, plus the like-gating element still functions.
You just can’t set a default landing tab.
However, each of your apps still has its own unique URL. That means you can drive traffic to any “landing” page you wish – from within Facebook via ads, your profile and other places as appropriate; and from outside Facebook on your website/blog, other social profiles, tweets, email campaigns, email signature files, and so forth.