Wuque Studio's 75% with exploded arrows, a large magnetic knob, and aluminum or brass bottoms with mirror PVD or sandblasted finishes. Gasket mount with PORON dampening; ~2.0 kg unbuilt.
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.
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.
From 2018 through 2022 the typical custom shipped through one host vendor and a fan of regional proxies; by 2026 the baseline custom is a configurator on a vendor's own storefront. Boards moved. Keycap group buys mostly didn't.
Two years ago a custom-board recommendation defaulted to 65% with a polite note about 75% as the next step up. The KBD75 v3's staying power as a default recommendation, the QK75, and a crowded mid-tier have flipped that order. 75% is now the layout customs reach for first.
Mammoth75 appears in editor-curated build sheets.