At the moment we are unable to ship .Net Core compatible build of Telerik Data Access due some missing framework APIs and lack of drivers for most database systems that we support.
Our roadmap is heavily driven by Sitefinity needs and at the moment we are not aware of any short or medium term plans to go in that direction.
Adopting .Net Core will be a huge step forward for Telerik Data Access and if we decide to start such epic project I will make sure to publish an announcement for the good news.
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about Telerik Data Access vNext as a powerful framework
able to solve core development problems.