For a number of years the Apache Forrest project has been in low-activity 
maintenance mode, as explained in the quarterly Board reports.

There had been hope for new committers and new development ideas, but these 
have not eventuated.

In June 2019 there was another opportunity for discussion and expression of 
renewed interest, on the developers mailing list:
https://lists.apache.org/thread.html/fda24957e049f10d282037594d2aa61ce9a31cf8fc5313959aa81672@%3Cdev.forrest.apache.org%3E

There being no further discussion either here or on the developer mailing list, 
please refer to the new thread about the next steps:
Subject: [VOTE] Move Apache Forrest to the Attic
https://lists.apache.org/thread.html/c49f6223e82bf32b559dc4bf0a061a75369856e11cf05cf654e51036@%3Cdev.forrest.apache.org%3E