so i have contact itunes connect support team and they confirm it, below their response
The email notification quoted is official and it will take place from the 1st of January 2018. Every app created with templates and app generator services will be rejected.
Nonetheless, we are not the appropriate channel to request information about App Review guidelines and processes.
Am a developer with itnues and i have apps written using PhoneGap but didn’t get this email
so your advise please ? what’s going on !! should we convert our app to native platforms ?!