Yes, it's true. The following is a quote from Ebay.com;

Digital goods are often reproduced at little to no cost to the seller. On eBay, this creates the potential for Feedback Manipulation (both real and perceived). To preserve the integrity of the Feedback system, effective March 31 all goods that can be digitally downloaded or transferred electronically must be listed using the Classified Ads format. Using the Classified Ads format, sellers receive a 30-day ad at a fixed price. This solution enables sellers to continue to market their digital goods on eBay; however, because Classified Ad listings are a lead generation
tool and do not result in transactions that go through eBay, Feedback cannot be exchanged between buyer and seller.

Sellers who wish to continue to offer digital goods can do so by selecting the "Everything Else Information Products" category in the "Sell Your Item" form and choosing the "Classified Ads" format (not auction-style or fixed price).