Nope, the wording in the SDK explicitly says, and I quote "VST 2 API source code is NOT part of this VST 3 license!" https://steinbergmedia.github.io/vst3_dev_

Nope, the wording in the SDK explicitly says, and I quote "VST 2 API source code is NOT part of this VST 3 license!" https://steinbergmedia.github.io/vst3_dev_portal/pages/VST+3+Licensing/VST3+License.html https://steinbergmedia.github.io/vst3_dev_portal/pages/VST+3... https://steinbergmedia.github.io/vst3_dev_portal/pages/VST+3+Licensing/Which+files+fall+under+which+license.html#what-about-vst-2 https://steinbergmedia.github.io/vst3_dev_portal/pages/VST+3... It is the same, there is only the pre-2018 licenses. (But a few hosts that avoided VST3 due to licensing may implement it now due to this change.)