Produced by E. M. D. T. "First Hungarian D20 Society". Don't be scared away by d20ness. The style and feel is very much Appendix N inspired. It's not just another imitation of old-school sensibilities. It's its own product. And has a sprinkling of unique "spices" that derive in part from it's Hungarian roots, I assume. Besides, Gabor Lux's and other contributor's work is great due to their ideas, structure, and writing. Not statblocks.
What do you get? I haven't read it yet and this is not a review. But I'm the happy owner of a digest sized 44 page, nice layout (a fair mix of modern / readable and callbacks / homages to zines of yore), varied and evocative / inspiring art (which for me as an RPG user is the most useful and valuable trait art can have). Plus a really nice looking on thicker paper, two sided, 4x digest size map. For $8 + $4 shipping to USA.
You can order the first two issues of Echos From Fomalhault and The Barbarian King from EMDT's online store.
Beyond Echos From Fomalhaut, there has been a significant amount blogged about and published (self-published, in OSR magazines, and other products). Much of it in Hungarian (to the loss of non-speakers, like me, I am sure) There are online English Fomalhaut Resources. And I definitely suggest acquiring back Knockspell issues for the "Isles on an Emerald Sea" series.
Reading the first issue made me want to get on my DM cape and play! In fact I've since started organizing a Wilderlands sandbox starting with the Beekeeper adventure in that issue. Flipping through, it appears Echos From Fomalhaut #02 will be just as inspiring. I can't really say anything better than that [it makes me want to play] about an RPG product.