That's right. You can read the first 4 chapters of Nocturne right now, free of charge, even if you aren't a supporter! Attached to this post are these sample chapters, in the usual DRM-free EPUB and MOBI formats, so you can read them on a Kindle, your desktop, a phone, or anywhere else you like.
If you like what you've read, make sure to check back here on April 21 for the official release of Nocturne. If you're not quite ready to put up enough to join the Serious Reader tier, then look for the full public release in July, here and on KDP.