Dashboard sharing in version 2.5 is limited to 30 days. I’m not sure whether previous versions offered unrestricted dashboard sharing or if this limitation already existed.
In my 2.3 infrastructure, I’m now seeing ‘Upgrade to Pro’ buttons in ‘Schedule Downtimes’ and ‘Acknowledge Problems’ to activate certain features. This doesn’t concern me much since I’ve never used these features before. However, I’m worried that Checkmk community/raw edition might be moving towards a limited model.