I don't use dd-wrt anymore, because I changed hardware. The firmware beta's are still being built for a large number of devices. The other download page and then beta shows the last bits from the 12th of November, 4 days ago.

How well it is maintained, I don't know. But it's still fresh. https://dd-wrt.com/support/other-downloads/?path=betas%2F2025%2F11-12-2025-r62606%2F