Yes, that is something that we typically do in our Kickstarter projects. We partly did it for ALIEN as well - we shared the 168-page starter kit PDF back in May and had a feedback form for it, and later in the summer we shared the whole of Chapter 7.
Typos are always horrible to see as a creator. I will say however that the handful that slipped by here were not due to us rushing the job or anything like that. The book is extensively proofed, both before and after layout. The typos that did slip through in this 400-page book are simply due to the fact that humans are, sadly, sometimes fallible.
No one is infallible, and the product is an incredible piece of work, lovingly done by fans of the setting. Kudos, Sir - you and yours have done well, and I'm doubly happy that you yourself are engaging with us here and helping to iron out the one or two typos that might actually impact play - like the Speed and Stealth Mode variation rules.