Big devs can now make their game eligible for under 16 players by paying 100,000 ROBUX:
"This option is for professional studios that need a predictable launch window to coordinate their Roblox game with off-platform marketing. This review process takes up to 48 hours."
Developers can now pay a refundable fee of 100,000 Robux to have their game quickly reviewed for access on Roblox Kids and Roblox Select, bypassing the 500 Highly Engaged Players requirement.