N.B. LGR4 Secret of Phantom's Cloister and LGR23 Strange Bedfellows were discussed in other scenarios, but never made available.
From the Wizards of the Coast announcement:
At Gen Con Indy 2003 the RPGA is proud to present the first foray of the Dungeons & Dragons Campaigns program: Legacy of the Green Regent. Set in the Forgotten Realms, and using Dungeons & Dragons (3.5 Edition), the campaign style should be somewhat familiar to folks who have played Living campaigns, but different enough that we have shed that title.
How are the D&D Campaigns offerings different than Living campaigns? It may be better to start with how they are the same. Like Living campaigns, every campaign in the new program will be large multi-player, multi-DM games offered at RPGA events. You create your own characters, using the Player’s Handbook and the Legacy of the Green Regent Campaign Standards document available in early July. You play that character in a number (about 20 or so a year) of specified adventures, most of which are available as a free download for RPGA Herald-Level GMs .
Each adventure offers players challenges for their character, and the possibility of experience point advancement and treasure. Each adventure also offers the chance of that character’s horrible death at the hands of a mischievous foe, or diabolical trap. As play moves forward, your character’s actions ultimately shape how that story progresses, and ultimately how the story ends.
Just how that’s done is one the exciting new features of D&D Campaigns: we’re going electronic! At the end of each adventure, the DM answers a number of questions, based on the play at the table. We track and ultimately drive the campaign by those answers. If more groups killed the bad guy then did not, that NPC dies in the campaign. If the majority of groups playing the adventure did not reach a specific adventure goal, it has real play consequences. All of this builds to the campaign’s finale. That’s right, this campaign ends, and how it ends is determined by its player’s actions.
Campaign consequences aren’t the only thing we are tracking digitally, we’ll also be tracking your character’s advancement. Log sheets, time (or day) units are a thing of the past; the answers to the campaign consequence questions do a double duty; they also determine how much gold and experience points your character gains at adventure completion. We’ll also be tracking other character consequences, including character death, level drain, and resurrection consequences.
While we track the basics of character progression digitally, how you progress your character is up to you. Legacy of the Green Regent features some new methods and mechanics to help you create, and then truly personalize your character as it advances. First, the Campaign Standard document features three styles of campaign starts: quickstart, corestart, and fullstart.