A fan named Style75 reviews Lost City over at the Wizards of the Coast site:

Bravo! I bought the PDF last night and I can tell you it is fantastic. This is a quality product that has been carefully put together. It makes me want to start a new campaign just to try it out. I give this module my highest recommendation. It takes all the good features of 4e and merges them with solid adventure design. Lots of story, great NPC’s, new monsters, skill challenges, the works. Anyone who likes 4e and prebuilt sandbox style campaigns will love it.

I think we can’t ask for more than that. Congrats to Logan and the crew!

Lost City is available in a print+PDF bundle and in straight-up PDF.