The Xenium ICE chip has been discontinuted and they are about to release the Xenium Gold chip with SP adapter.
It's the exact same chip as the SPICE, but is plated in 24 Karat gold. All backorders for the SPICE will be filled with the Xenium Gold. It will come shipped with their new OS (2.3.1).
Place an order for an ICE and you'll get a Gold. Their website says they had to move to a lerger factory and they are currently producing the chips. It should on bee a few weeks until they are shipping.