The release process for Expired .br Domains is different from other TLDs, so I thought I would explain it a bit. Expired .br Domains go through the normal redemption period and pending delete period, but at the end they do not just get released. The .br registry keeps them and releases them together at a certain time. The release process takes place once per month.
*Update September 2017*: The release process for .br changed. It is now once per month and there is an auction system in place. You can read about it here (Portuguese) or here in English (Google Translate).
The .br droplist will be imported automatically 1-2 days before the release process starts. You can find the .br Droplist list in the Pending Delete List.