Steven Chan, Director, Applications Technology Integration, has recently started a blog (link to blog, link to RSS feed) called "Oracle E-Business Suite Technology". As Steven descibes it, the blog is an "insider's take on technology stack-related topics for the Oracle E-Business Suite, with the occasional product announcement, glimpses into the inner workings of Oracle Development, editorials on business philosophy, and musings on IT industry news."
Discoverer customers who use the product with the Oracle E-Business suite should find this interesting, as announcements related to Discoverer versions and their certification with the EBS (sorry, this is probably not an approved abbreviation that I should be using...) would be covered here from an expert insider's perspective.