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eBay will add TLS1.2 support to our Production API endpoints on 9/15/2016
Starting on Thursday, August 25, these Sandbox API endpoints already support TLS 1.2:
We strongly recommend that you use the Sandbox endpoints to test your application’s compatibility and verify that your system supports TLS 1.2 and SHA2 cert before 9/15/2016 . Please file a support ticket http://developer.ebay.com/support/developersupport/default.aspx if there are issues.
eBay will also add TLS 1.2 support to all applicable endpoints and web pages over the next several months.
Please note that this change is part of an industry-wide initiative to improve security standards across the Web.