IBP product support newsletter will regularly inform you about bug fixes and important notes which are relevant for IBP. To subscribe for the newsletter refer SAP note 2445475 and click on subscribe link. It will be updated whenever a new note or bugfix is classified as critical by SAP Support. You will be able to identify the last change date in the title of the note.
Once you subscribe, you will also receive the newsletter in your inbox whenever any critical bugfix or issue is identified.