"Product Category Tab Discontinued The "Product Links" tab, which provided product category and search functions has been incorporated into the "General Offers" tab. Product Links are now a "special offer" type when using the advanced search functionality of "General Offers". As merchants begin to create these new offer types they will become available to affiliates. Commission Junction will continue to track existing product links for affiliates. Note: affiliates can also create their own product links by redirecting the destination of general links to specific products within the merchantís Web site. For more information, click on the CJU tab and go to How to Use CJ>>New Features."
It seems they are just changing the backend of product links. Old product links still work, and merchants can add new ones in the "special offers" section. You can also make your own links by changing the landing URL in your affiliate link. This is described on CJ's site as listed above.