The month's Sage Advice column by WotC's Jeremy Crawford covers the rogue's sneak attacks, ability modifiers to use with attack roles, and answers the questions "does anti-magic field work on a dragon's breath weapon?" (no), and "do magic weapons automatically give you bonus to both attack and damage rolls?" (only if it says so in the description).
The Sage Advice Compendium PDF has been updated to include this information. You can read the current column here.
The Sage Advice Compendium PDF has been updated to include this information. You can read the current column here.