Source: BFFC
Live from Toy Fair 2017 today, our friends at Jedi Temple Archives broke the news that a new Hasbro Black Series 3.75 wave will include a Walmart exclusive Prototype Boba Fett!
The last Black Series Prototype Boba Fett was in 2014, stood 6 tall, and was a Walgreens exclusive.
According to Yakface, this line is actually re-packs of previous 3.75 figures, which include already an older Prototype Boba Fett from 2011, which is already a re-paint of their 2004 Boba Fett (VOTC) with a belt/holster piece from a 2007 Fett.
Helmet nod to jeradchil on Twitter for the heads up and Kelton Slaton on Facebook for the re-pack points.
UPDATE
An official press photo has been released:
It's due to be released this Spring.