Yep, Linksys have seen fit to add another router to the WRT range (which includes the classic WRT54G).
http://reviews.cnet.com/networking-a...-35833876.html
The new router is apparently the most powerful on the market with a 1.2GHz CPU, 128MB of Flash and 256MB of DDR3 RAM. It also includes USB3, USB2 and eSata connectivity.
It also includes 4 antennae, and, as with the WRT54G, supports third party firmware.