EDIT

for the differences see:

https://stackoverflow.com/questions/24631909/differences-between-java-8-date-time-api-java-time-and-joda-time

and

http://time4j.net/tutorial/appendix.html

The only thing that I found, which is not supported is to have a partial date without a year and a day without a month.

The class partial is not available in java.time.* it is possible to get a date without month and day or a date with only year and month (by using the classes Year or YearMonth)

Is this still an open issue? I think we decided not to move to java.time.* for now, but this was more because there are many dependencies to joda-time and we might not have the time to change them all at the moment.

It was not a decision because we think joda-timer is necessarily better in terms of our requirements. However, if we consider to move to java.time.* in future we need to check the missing "partial" issue.
We definitely need something to represent e.g. seasons like "Apr.-Sep." or "Mar 15th to Sep 15th".
This may be missing in java.time.*.

Should we close this ticket as Wontfix?