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...

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.)