I saw some of the shades out at my local MAC!
After extensive swatching and testing, I'm definitely planning to B2M for Dew and Lightly Charred. Both of those lippies are absolutely gorgeous! Dreampot is adorable but does not work on me, and I'm more curious about the frosted shades of dark blue/purple/violet. 4Eva looks a smidge warmer and darker than Lavender Jam from Bite's recent collection, and I'm happier with the cooler tones in the Bite shade.
Red Rock is a clean, bright maraschino cherry red that looks almost neon. I have some similar shades, though, so I'll pass on that. Dew is an unusual shade that I can see working for a wide range of skintones, and Lightly Charred takes on a slight purplish tone on me and looks like a twist on a nude lip.