This article makes me very suspicious of Symantec. How long have they known about this, really? Are they just releasing this information now as a marketing reaction to recent discoveries by competing firms?
The vaguely written timeline says in passive voice that Regin has been observed since 2008. By who? Why are we just hearing about it now? I wouldn't blame them for keeping some discoveries quiet for a while so they can do some stealth research, but the timing here really smells like they are being PR driven instead of being driven by doing what's best for the overall security community.
What would inspire much more confidence would be a story of how this was discovered, and how the discovery and research played out, as we have seen for some other malware. Instead this looks like they have know about this for a long time, and now for reasons they aren't going to disclose, they have decided, or have been given permission, to reveal some of what they know.