The development of that version was at a standstill for a very long time, that at one point, users thought that development had ceased. And I had actually given up on it and moved to FreeNAS. Even when I wrote Network Attached Storage (NAS) distributions just last week, Openfiler was not even on the list.
But some good folks have revived the distribution, releasing a new stable version of the Conary edition in April of this year. That edition was Openfiler 2.99. With the announcement that the distribution is being ported to CentOS, that appears to be the final release of that line. When the CentOS-based edition is released, it will likely be Openfiler 3.0.