Hello, @raj,
You can always get the latest updates of the Premium plugins with the Theme update in the Theme Package.
This plugin is already included in the theme package and already purchased the license by 8Theme.
You can not use the library/template of any Premium plugin including in any Theme Package, If you want to use the premium plugin library/template then you have to purchase that particular plugin license separately, this is the Envato policy you may wish to confirm from them as well.
Regards 8Themes Team.