Have you heard about ArcGIS Experience Builder? It was first previewed at the 2019 Esri Developer Summit (see more details here: https://www.youtube.com/watch?v=R9o1e5eGX_A). If you love Web AppBuilder, you'll love this next generation product that introduces a whole new way of building web apps. To get more information and receive announcements about the beta, sign up for the mailing list: ArcGIS Experience Builder | A new way of building web apps
P.S. There are no plans to replace or discontinue Web AppBuilder. Both builders will be running and maintained in parallel.
Is the developer preview still going to be available?
The slides show a June timeline (see link below).
If this still accurate?
Hi Drew - thanks for your question!
We are working hard to get Experience Builder ready for a beta release as soon as possible. But yes, we will be releasing both an online and developer edition beta. At this point, the timeline has been pushed back a little, most likely with a July timeline. If you want to join the mailing list, we'll be sending an email as soon as it's available. Thanks!
Please review this questions and answers from the esri UC 2019 Q&A on Experience Builder,
EDIT: ArcGIS Experience Builder - Beta is now available!!
Hope this helps,
This is really an interesting app(site) builder. But I am worried that this will replace the current Web AppBuilder in Online/Enterprise. Is it a complete replacement of the current or will this be added as an additional app builder? I like to know if our current intentions to build widgets will be wasted time and money or will that still be there when Experience Builder are released?
What esri is saying right now is that EB is not a replacement for WAB but several years down the road WAB will be like FlexBuilder (i.e. obsolete since it uses the JS 3.x API).