Dungeon 124 this month features the Chamber of Antiquities level by Rob.  There were some letters and feedback in some of the issues afterward 112, but I'd have to check to see which ones.

In terms of additional products that mention Maure Castle, here's the relevant entry from Jason Zavoda's Greyhawk index:

Maure (House of)[CLN]
       LGG - 125,126

Maure Castle {Mauve}[CTL]
       COG:GOTF - 18
       DRG#191 - 66
       FTAA - 73
       FTAC - 30
       FTAR#3
       LGG - 125,126
       LGJ#0 - 5,9
       SOOC - 7,289,290,292
       TAB - 3,8,101,IBC
       TAB:AM - 1
       TSC - IC
       WG5 - 3,4,13,16,26
       WG11 - IC
       WGA4 - 49
       WGM1 - IBC
       WOGG - IBC

Maure Lands [PLC]
       LGG - 125,126
       LGJ#5 - 31

Jason's index was last updated in August 2003, so it won't list any items newer than that date, but it's a great resource for older products.  You can download a copy at http://www.harvestersheroes.com, and that includes the key to the various abbreviations, too.