Ok, I just updated the github code.  I will be spending some time transitioning my nodes to make sure they signing node isn't overloaded, as it has a few thousand blocks to catch up with.  Feel free to update your nodes in the meantime, and when the signing node is ready it will spread the signed hashes throughout the network.  Then anybody should be able to run a wallet with minimal RAM requirements.  Let me know if there are any bugs or issues.