Based on feedback from our core test group in the Guardian Project, it seems like we have a solid new version of Orbot that includes Tor 0.2.2.25, as well as improved handling of transparent proxying. This new build also includes our own version of iptables, and proactively checks if the device has netfilter/owner support in the kernel. This should lead to overall less support requests from confused users who have "root" but still can't transproxy.
We have a few UI tweaks to make, and need to make sure all of our translations are up-to-date, but otherwise, the app feels very ready to go.
I invite any of you with a few spare cycles and an Android device handy to try it out if you haven't already. As this is a dev build, it is not signed by the official Tor distro key, so you will have to uninstall any existing Orbot official release. The final app we release to the market will be signed by the Tor key, and users will get an automatic "updates available" message from the Android market.
https://guardianproject.info/downloads/0.2.2.25-orbot-alpha-1.0.5.20110508a-... (.asc - signed by nathan@guardianproject.info 0xB374CBD2)
If you aren't on our guardian-dev or -alpha lists, but are an Android user, then I encourage you to join, as we keep most of the day to day traffic on those lists: https://guardianproject.info/contact/
Best, Nathan