Concerning the VST2 License, we will include it again for last time into the next update of the VST3 SDK coming very soon.
If you are not sure that you have signed or not the license, it will be the last change to do it. This concerns plugins or host developers/companies.
You have to fill it, sign it and send it back to Steinberg, we will send you it back again signed by us (for VST2 until October 1th 2018).
It seems that if you haven't signed with Steinberg you won't be able to sell VST2 plugins after October 2018.
By doing this, Steinberg is trying to force devs to switch to VST3 even some popular DAWs doesn't support it at all (Ableton Live, Renoise).
I know that there's already a thread about the end of VST2. But I think it's important for devs to know that they won't be able to sell VST2 after October 2018 if they haven't signed the agreement with Steinberg (unless I'm missing something).