Calendar Release Date?

I really love using MailSpring and want to make it my daily driver. But, one big downside is the lack of a calendar app. I see that a preview version is available for Google Calendars only although I use Outlook to manage my calenar.
Is there any news on when a full release for the calendar will be released?

Yes, this would be good to know. I think extra functionality has crept in - I find that accepting an invitation in Mailspring adds the meeting to my Google Calendar, which is nice. The calendar view itself is basic but OK. For now at least, I’m still using Morgen as my calendar app (it’s currently the only good, modern calendar app for Linux AFAICS) but it’d be nice to have a properly integrated solution in Mailspring.