Canada Border Services Agency (CBSA) has now published the list of verification priorities for July.
This website also includes a link to an archived list. It may seem unusual that the archived list is dated July 2019, but that list is actually a list of all goods for which the verification is complete and is now simply a record of past results. However, it is quite possible that these goods will appear on a future list.
All goods on the list for a verification of tariff classification have been on previous verification lists. However, for Parts of Machines and Mechanical Appliances and Other Chemical Products, the verification priority was released in December 2018 and results are not yet available.