If you're going to buy into another battery platform - I'd suggest this little guy:
https://www.boschtools.com/us/en/boschtools-ocs/palm-routers-gkf12v-25n-196784-p/
It's a gem and punches well above it's weight. Though not as versatile as the makita or dewalt , I subscribe to the "
you can never have enough routers" school. Which means I have another unit that's more suited for that task and don't really need the versatility.
As far as Festool is concerned; don't hold your breath. :

They have been behind the market on cordless tools from the get go, especially compact / 12v versions. Part of it cultural. Their leaders didn't gauge the wind correctly decades ago and I suspect they just don't have the resources to devote to catching up.