Bakkerfans announced a forthcoming ARC giveaway and Pat's Fantasy Hotlist has released a "Quote of the Day," which basically amounts to an excerpt a couple paragraphs long. Definitely shows off Bakker's amazing writing!
Pat's Fantasy Hotlist has shared two more quotes from about half-way and two-thirds through the book. Minor spoilers regarding POV: Quote #2, Quote #3.
kobo.com has a preview available of the table of contents (all the chapter titles!), the What Has Come Before section, the entirety of chapter 1, and part of chapter 2. Some readers, myself included, have noted difficulty accessing the preview on smartphones and via certain browsers so don't be discouraged if you can't access it first try (I couldn't use Firefox but Safari worked - I'm on a Mac).
Second Apocalypse members have confirmed purchasing TUC at Waterstones in the UK, shipping from Waterstones to US (at a prohibitive price probably), and having Barnes & Noble in US put books on hold for the second date (not revised!) US date of July 11th!