Other changes coming in mid-June include a newly designed layout for product pages, which has been in testing for the past year. The new layout will include larger, higher quality pictures with a zoom-in capability, as well as a "real-time countdown timer" for auction listings.

EBay will also debut a service called Smart FAQ, which automatically creates a "frequently asked questions" section to a product listing by pulling information from the listing's text. In testing, using Smart FAQ cut in half the time merchants' spend answering buyer questions, eBay said.

Last month, eBay CEO John Donahoe said the company must adapt to new e-commerce market dynamics, like being more hands-on in managing its online marketplace to increase buyers' confidence and trust.