The world of information and communications technology has changed completely since the ITA was created in 1996. In order to take this into consideration, the ITA has been expanded to include 201 IT products that did not even exist in 1996. As of July 1, 2016, these products will be exempted from customs duties, or at least subject to a step-by-step reduction in tariffs on the cross-border shipment of goods between individual ITA member states, to be completed by July 2019 at the latest.
The approx. 50 member states include Switzerland and Liechtenstein as well as all EU member states, Norway, Iceland, the USA, China, Japan, Korea, Singapore, South Korea, Canada, Malaysia, Thailand and the Philippines.
The list of the 201 IT products now exempted from customs duties can be found in this WTO document (Declaration on the Expansion of Trade in Information Technology Products) in the Annexe from page 4.