Hey I just had two quick questions regarding the up coming errata
Question 1: Is there a round about date set for the errata?
Not at this time. We're hoping to get to it soon and have been collecting data, but we are working on product feverishly

Question 2: Should I wait for the errata to come out before I set up my Fantasy Craft Campaign, or will this errata just be small tweaks to the game engine?
There is nothing game-breakingly broken in Fantasy Craft, and no core rules are being rewritten, so I would say get your campaign started! Most errata will focus on typos, clarifications and simple changes (such as dropping Circle of Power from the Sage's Cross-Training, changing bonuses from using 1-handed weapons with 2 hands and Size mods to grappling, etc.) rather than excising large chunks of text or completely rebuilding rules. All these should be light enough they won't affect the characters seriously, aside from maybe a swapped modifier here and there