Check it out but I would recommend that you try your applications first before installing this into your production environment because this is a feature pack and it’s contains the last pieces to upgrade the server to Java 8 and with this update the client gets Java 8 and an upgrade to a newer eclipse version.
Check out Paul Withers post also http://www.intec.co.uk/notes-domino-fp10-suggested-steps/
URL to server download on Fixcentral –>