MMORPG.com has posted a review of Dark Age of Camelot: Shrouded Isles, giving the expansion pack an overall score of 8.3/10. Their conclusion:
Shrouded Isles, ultimately, provided a broader platform from which to launch subsequent free and retail expansions, carrying players through another year as Mythic worked on Trials of Atlantis and adding free housing. Looking back, I loved the expansion, and I played voraciously for another year after it was released. It didn't break the game, nor did it fundamentally alter or improve the original, but after only a year since the release original release of Dark Age of Camelot, more of the same was apparently enough for me.