Now, if I am wrong about this then the question is moot. I discovered Oblivion a little late and was introduced to it via the PC version and eventually bought it for my PS3. I got the Greatest Hits version and it included Shivering Isles. Now, from my understanding if you bought the orignal PS3 version that came out at launch you were never able to buy Shivering Isles for your version and you had to buy the GOTY edition. Now, I said all that to ask this. If this is the case could Dawnguard just be history repeating itself?

(Yes, I understand I am being a complete pessimist but its just how I am)

I don't know if I'm right but I was told you could get it for a limited time in some areas or something? but it was a different company than bugthesda that converted it to PS3, I was introduced to TES pretty late though.