Currently on extended backorder. Substitute available for immediate shipment: SRAM Red 22 11 Speed Chain with Link
Shimano Ultegra 11sp chain with quick link. Also includes the pin.
The new link looks like a quality item and we expect it's a a good option for the home mechanic who does not have the tools or skills to push the connector pin into the chain.
Either way Shimano does it right again.