Hey Jitendra,

A lot of the plugins architecture stays the same. The main changes are in the themes and templates. In terms of JSON updates there are a few things to watch out for. For example all objects should have an underscore - graphic: {} should be _graphic:{}

If you're building something that has a popup then you'll be able to use some of the new core features that help with popups. Also Drawer can be used to house plugins. More on this when we do a release.

Thanks,

Daryl