Figured some of you guys might be interested in this. If you're like me and don't want to add bulk to your wallet with an airtag holder:

Tracking Card - Find My (nomadgoods.com)

Seems pretty thin, I think my favorite part is that I can charge it using a Qi wireless charger. I ordered one to try it out.

Nomad introduced Tracking Card Pro, a Find My wallet tracker shaped like a metal credit card.
Battery life rises to about 16 months per charge, with wireless charging on any Qi or MagSafe pad.
The card measures roughly 85 by 54 by 2.5 millimetres, weighs 15 grams, and is IPX7 rated.
Features include audible locating tones around 94 dB within short range and standard Find My network tracking.
Apple’s Precision Finding is not supported, third party trackers do not get Ultra Wideband on iPhone yet.
Preorders are open at 69 dollars (CA), with shipping listed as January 15.

What to Know

• Tracking Card Pro is a wallet sized tracker using Apple’s Find My network, designed to mimic a premium credit card.

• Nomad quotes up to 16 months on one charge, recharged wirelessly with Qi or MagSafe chargers without cables.

• Thickness is about 2.5 millimetres, a tradeoff for longer runtime versus the prior 1.7 millimetre model’s five months.

• The FAQ notes no Precision Finding today, sound alerts help when you are within roughly 150 feet indoors.

• Preorders are live at 69 dollars (CA), with a two pack discount and shipping targeted for mid January.

Sources:

Primary product page with specs, pricing, IPX7 rating, and January 15 ship date. NOMAD

Reference page for the previous Tracking Card and five month battery figure. NOMAD

Launch coverage, design comparison and battery life context. MacRumors

Specs, battery life and thickness, market context. The Verge

I’ve been using the rolling square one but sometimes it won’t beep if I’m in a different room than it(not reachable) even if I can see its live location. It’s also relatively thicker than a normal credit card

Does anyone have experience with other brands? I value loudness/ability to ping the card while I’m not in the same room over the thinness

The announced on the livestream that they will be launching a Find My card when the Passport Wallet launches on the website. It's partially white label (i.e. that another company originally designed it), but that there will be some PD touches involved.

Just received my new Nomad Card Wallet Plus & Tracking card, been using a Ridge Wallet for just over a year and decided I wanted to get back into the Leather Wallet game. The Ridge is nice but has its flaws and for some reason my cards have started to fall apart in it.

Didn’t do much research but love Nomad Goods and currently using their Magnetic Leather back on my 15PM.