In addition to improved wireless drivers, the latest experimental release contains support for connecting for connecting via 3G using a USB 3G modem. This feature was implemented by user Cezary some time ago, and is finally being included in the official version -- HUGE thanks go out to Cezary for creating this!
Also, the latest experimental release supports sharing printers connected via USB, and anonymizing traffic by running a Tor client. This version of Tor includes patches created by the developers at Access Labs, to run with lower memory requirements, but be aware that Tor still takes up a lot of memory. I've included it only on routers with a USB port, which tend to have more robust specifications. It can be run with 32MB of memory, but 64MB is recommended. Also be aware that Tor, by its nature, is quite slow, but it can anonymize your traffic for you, if used correctly. Note that you should NOT run bittorrent through Tor -- not only does anonymization not work for bittorrent, it can expose your identity in any other traffic you run through Tor.
Finally, there are several dynamic DNS improvements in both the experimental and stable releases. In addition to bug fixes, dyndns.com no longer appears at the top of the list of providers. dyn.com/dyndns.com has pulled a "bait and switch" and has started requiring credit card numbers from new users before providing the DNS service they still advertise as (and previously was) free. They claim that anyone can still have one free hostname... but now require credit card information, so this really isn't "free" as advertised. Therefore, while your existing configurations will still work, I've moved dyndns.com lower on the list of providers to encourage people to use truly free providers and discourage people from using dyn.com. freedns.afraid.org is now at the top.
New in 1.5.1:
- Increments OpenWrt Backfire version to include latest wireless driver fixes
- 3G wireless connection now configurable on routers with USB port when a 3G modem is plugged in
- USB Printer configuration
- Tor anonymizer configuration for ar71xx routers with memory >= 32MB and >=8MB of flash space (see here for more info on Tor)
- Implements user defined ping limits to QoS congestion controller
- 5GHz and 2.4GHz SSIDS displayed seperately on overview page
- Fixes bug causing dyanmic DNS daemon not to update properly
- Fixes bug preventing freedns.afraid.org dynamic DNS updates on some platforms
- Revert to simpler OpenDNS configuration settings, should be less confusing and should work now
- Set freedns.afraid.org as default dynamic DNS provider (top of list)
- Add images for Netgear WNDR3800, TP-Link WR740N and MR3420
- Increments OpenWrt Backfire version to include latest wireless driver fixes
- Fixes bug causing dyanmic DNS daemon not to update properly
- Fixes bug preventing freedns.afraid.org dynamic DNS updates on some platforms
- Revert to simpler OpenDNS configuration settings, should be less confusing and should work now
- Set freedns.afraid.org as default dynamic DNS host (top of list)
- Add images for Netgear WNDR3800, TP-Link WR740N and MR3420