Like we already mentioned in other forums, it is time to move to VST3, we will not deprecate VST2, it is already deprecated since our previous announcement some years ago.
We are in touch since some year with main DAW companies, helping them to move to VST3… We hope that very soon all major sequencers will support VST3.
Concerning VST2:
Plugin developers having already signed a VST2 license agreement with Steinberg could continue to develop VST2 after the first of October 2018.
After this date NEW developers (the one having not signed the VST2 license agreement until this date) will be not allow to distribute VST2 plugins.
Note that distributing or reverse engineering the VST2 SDK (partially or fully) is NOT allowed by the current Steinberg VST2 license agreement.
Thanks for your attention
Yvan