I see 46 people as of this post have downloaded the TaxCloud version released on Nov 8 2013.
http://www.zen-cart.com/downloads.php?do=file&id=1208

I downloaded the zip file and did not see a change log or release notes.

The zip file was named taxcloud_1.5.3_for_zc_151.zip but the folder when extracted was named taxcloud_1.5.2_for_zc_151

Since the first version of TaxCloud for ZenCart 1.5.1 was a mix of 1.3.9 and not true version for 1.5.1. (upgraded in Feb 2013 by DrByte (thank you) to be true 1.5.1) and caused problems, feedback from people who have upgraded to the Nov 2013 version would be greatly appreciated.

Thank you for your time and feedback.