Good morning! Product updates are posted to the Sage CRE Support and Insights blog here at Sage City. The post below announced the U.S. Federal update, and the download link in the post takes you to the knowledgebase to download the most recent release of Sage 100 Contractor 2017. Log in is required to access the download.

If you have Sage Advisor Update installed, you can also download updates from that application. 

https://sagecity.na.sage.com/support_communities/sage_construction_and_real_estate/b/sage_cre_product_blog/posts/sage-100-contractor-software-notice-18-a-tax-and-software-update