2017-09-20 Update
Coveo Relevance Cloud
Include Twitter Content
You can now use the Twitter source to add shared or private content, and therefore make relevant user tweets, queries (keywords), lists, and collections searchable.
Apply Conditions to Your Salesforce Source
You can now apply conditions to your Salesforce source so that items are only indexed when they meet specific requirements, allowing you to greatly reduce your index size by preventing unnecessary items from being indexed in the first place.