When Boeing Business Jets announced its new BBJ 777X private jet, it unveiled a trio of interior-design concepts from Greenpoint Technologies, Jet Aviation, and Unique Aircraft Design.

The BBJ 777X is the private-jet version of the next-generation Boeing 777X airliner.

The Boeing 777-8 has a list price of $394.9 million, while the larger 777-9 costs $425.8 million; the cost does not include a custom interior.

Both plane types have been delayed by a variety of production issues, but the renderings show that for the select few who can afford one, it will likely be worth the wait.

The upcoming Boeing 777X has some big shoes to fill. The new wide-body is set to be Boeing's next flagship and the replacement for the iconic 747 jumbo jet.

And now there will be a private-jet version of the airliner.

Boeing Business Jets launched the BBJ 777X at the Middle East Business Aviation Association Show in Dubai, United Arab Emirates, in 2018.

"Our most exclusive customers want to travel with the best space and comfort and fly directly to their destination," Greg Laxton, the head of Boeing Business Jets, said in a statement. "The new BBJ 777X will be able to do this like no other airplane before it, redefining ultra-long-range VIP travel."

Since 1996, BBJ has been turning Boeing's commercial airliners into opulent private jets for the world's wealthy elite.

BBJ doesn't sell many planes, with just a few hundred orders in company history, but the aircraft it does turn out are works of flying art.

In addition to the 777X, BBJ has developed private-jet versions of the 737, the 787 Dreamliner, and the 747.

Here's a closer look at the new BBJ 777X:

This article was originally published by Benjamin Zhang in December 2018. It was updated by David Slotnick in 2019.