Progressive Web Apps

Very much looking forward to the refreshed Sites Builder and wondering what other advances towards web and mobile trends can be accommodated! Native Apps would seem to have almost had their day and Progressive Web Apps built around a website are gathering a lot of attention! I have two questions - Will Zoho Sites be responding with their own builder? Is their an interim option to accommodate Apple's Icon Web Clip technology which adds your website to the iOS Home Screen. For the latter it requires various icon sizes to be added to the root documents folder or somewhere in the website files which can be accessed via an URL. Thoughts appreciated Thanks!