Thank you for your interest in jsreport.
What does it mean by “dev instances for free *” and what does the “royalty-free” mean in enterprise scale license?
jsreport enterprise license provides you one license key you should deploy to only one production server, but you can use the same license key on your development machines without limit.
In case you want to deploy to many production servers, you typically want to purchase the jsreport enterprise-scale license which can be deployed to infinite amount of servers.
The royalty-free means you can embed jsreport to your solution and deploy it to your end customers.
What does it mean by “updates included for 6 months”?
Does this mean that we can only get the updates for just 6 months?
Yes, you will be able to update jsreport only to the versions released during the next 6 months after the purchase. In case you want constant updates, you should look at the subscription model.