Old Disavow Tools is gone, replaced by the Disavow Links List. Apparently it does the same thing but speculation suggests it might rat out sketch sites. 

https://www.seroundtable.com/old-google-disavow-tool-shut-down-30759.html

Don’t pay bloggers to write for dofollow backlinks. Pay writers to write. Google!!! https://www.seroundtable.com/bloggers-dofollow-backlinks-google-guidelines-30771.html

Google Search Indexing Tiers – Some documents stored on more expensive servers than others. Items that will be pulled or surfaced more frequently, for instance.

https://www.seroundtable.com/google-search-indexing-tiers-30784.html

Google continues to insert links to 3rd party websites in featured snippets clipped from other websites. https://www.seroundtable.com/google-continues-featured-snippets-supplemental-links-30788.html

DuckDuckGo flies above 100million searches per day

https://searchengineland.com/duckduckgos-focus-on-privacy-minded-users-pushes-it-past-100-million-searches-in-a-single-day-345462

New crawl stats shows more crawls – Just a reporting change

https://searchengineland.com/google-crawl-stats-report-now-showing-more-crawls-345452