I don’t know if two reviews qualify as a roundup, but I was pleased with the reviews for Falling Sky from both Publisher’s Weekly and Library Journal.
From Publisher’s Weekly:
This solid and memorable debut is set in a world where a disease has turned most people into quasi-zombies called Ferals…Khanna’s vision of a ruined world, populated by human monsters on the surface and desperate survivors in the air, is bleak but compelling. Ben is a flawed, selfish hero in the spirit of Han Solo, always on the lookout for number one until a greater cause catches his conscience.
Postapocalyptic sf is a heavily traveled genre, as is steampunk, but debut novelist Khanna combines both quite well here, as the airships help to keep humanity safe from the infected ferals on the ground in a world where the action never stops, leaving room for more adventures.
I’m very happy that people seem to be enjoying the novel. Only two more weeks to go…
Rising Tide, the sequel to Falling Sky, was released on October 6, 2015. 
Falling Sky, my first novel, came out October 7, 2014 from Pyr. It's an adventure story set in a post-apocalyptic future with airships.
[…] If you can’t make it on the 9th, I will be returning to New York for a reading at Fantastic Fiction at KGB, KGB Bar, 86 East 4th Street, NYC, December 17th, 2014, 7pm (Reading with Rajan Khanna!) […]