Heroku Changelog Deprecating certain router log fields and router HTTP headers

Change effective on 15 March 2013

On March 25, 2013, the queue and wait fields will be removed from router log messages. Also, the Heroku router will no longer set X-Heroku-Dynos-In-Use, X-Heroku-Queue-Depth and X-Heroku-Queue-Wait-Time HTTP headers for incoming requests.