60%, 65%, 75%, TKL, full-size — the names read like a settled taxonomy, but each cut trades away a specific cluster of keys for a specific amount of desk space. Here's what a reader actually keeps and gives up at each size, and how a firmware layer changes the math.
A July 26 product-update post from Wuque Studio sent buyers back to the Ikki68 Aurora's listing page. Mammoth V2 and Promise V2 remain forum speculation, and no group buy has opened.
The Nyawice's spec line and Mode's plate-tab mounting blocks both lean on one old idea — let a thin tab bend instead of a foam strip squash. The physics is textbook; the keyboard implementations are not, and the name covers more than one mechanism.
Every custom-keyboard buyer's guide since the mid-2010s opens with the same four-term vocabulary — 60%, 65%, 75%, TKL — as though it always existed. It didn't. One open-source PCB out of a geekhack thread is most of the reason that taxonomy exists at all.