I'm busy today revising and cleaning up Indra's codebase, maybe I'll start on the hidden service message formats soon, maybe even today, not really sure, just going over everything again maybe something else will present itself.
Doesn't look like the protocol will be wired into the network stuff by the end of the month, but hopefully it won't be long before we have something we can have a private alpha testnet. Not gonna answer 'wen indra'. Always ASAP!!!