Before… no Calls to Action on your cover image. Now… you can have a call to action. The restrictions relating to sales/purchase/price information, company websites, calls-to-action or addresses have been removed. Still have to abide by the ‘no more than 20% text’ rule though.
Theres’s more flexibility now – if you’ve got a sale on, want to put your address, email and contact numbers up or there’s a product/book you specifically want to promote, you can do it as long as you remember the text rule. Facebook provides examples of their 20% text rule but it’s easier to shoot across to the Cover Compliance Tool, type in your Facebook url or username and find out if you’re breaking the rules or not.
Go ahead, get creative. They’ve changed the rules, you may as well take advantage of them.