With SDCC not happening, those great exclusives hd to go somewhere.  The Vintage Collection 3-packs have been a regular thing lately, with most of the figures eventually finding their way to single cards after being previewed in California.  We don't know which if any of the 501st Legion ARC Troopers 3 3/4-inch figure pack will be released individually, but right now this trio is due on Hasbro Pulse in September for $49.99.  

As far as we know this is the only 3 3/4-inch exclusive set for the summer convention season, but hey, I'm happy.  The Clone Wars debuted 12 years ago and we're getting figures for it.  Do you know what we got 12 years after the original Star Wars hit theaters?  Literally nothing.

Hasbro writes:

STAR WARS: THE VINTAGE COLLECTION STAR WARS: THE CLONE WARS 501ST LEGION ARC TROOPERS Figure 3-Pack
(HASBRO/Ages 4 years & up/Approx. Retail Price: $49.99/Available: Fall 2020)
Featuring premium detail and design across multiple points of articulation inspired by STAR WARS: THE CLONE WARS, this 3.75-inch-scale STAR WARS: THE VINTAGE COLLECTION STAR WARS: THE CLONE WARS 501ST LEGION ARC TROOPERS Figure 3-Pack makes a great gift for fans and collectors. Highly poseable with realistic detail, these figures feature original Kenner branding and can be displayed in action figure and vehicle collections. Includes 3 figures and 15 accessories. Available exclusively on Hasbro Pulse in the US & Canada in September 2020.