We are already using the IS 6.5 with SP2. Hope the broker is also the same version. Anyways thanks for the information. I too will search the advantage for any such news.
I am not sure that we can set priority for the document as in the properties dialog box for the document there is no such property to set the priority. If you know how to set please let us know.
From what I understand, priority processing of documents is being handled by using JMS instead of native Broker documents. If you write your own Java client to the Broker you can use priority (with 6.5.2), but it is not, and probably will not, be accessible via the Developer.
As an update to this, in the 7.1 version, in the WmPublic package they have added JMS messaging publish/subscribe functionality similar to the native broker publishes in the past - only you can add priority now