Please refer the Frequently ask question for your quick help
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If your End Product which is sold - Then only your required Extended License. i.e. If you take subscription charges (monthly, yearly, etc...) from your end users in this case you required Extended License.
6 Months of Support Includes with 1 year of free updates. We are happy to solve your bugs, issue.
Yes, Berry Support the TypeScript and it is only available in Plus and Extended License.
Berry is our flagship React Dashboard Template and we always add the new features for the long run. You can check the Road map in Documentation.