HD support (BIP 32 and 39) in bitcoinj is practically ready to enter beta and get real testing from real users: we're just waiting for the Bouncy Castle folks to release a much faster version of their library (because HDW means calculating far more keys than before).
For Hive, I think preparing a preview/beta of HD wallets would be quite easy at this point.
hivewallet do you have any update on this? I am trying to help a hivewallet user and spent quite a bit of time talking about change addresses and using a new address each time (for privacy reasons) only to find out afterwards that Hive does not support even generating new addresses!?
Anyway, once I had got over my disbelief I decided to try and find out what is going on with that and as best as I understand it, this was taked about back in 2013 as being "upcoming", now Mike Hearn is saying that it will be "quite easy at this point", and looking at your github it seems that there has been recent discussion on this. So, I am just wondering where you guys are with this?
And if, as I guess you are, you have it in the pipeline soon, when might that be do you think?
Anyway, thanks for making a nice user-friendly wallet

P.s I could not find any test/testing/dev branches on you github, as I thought it might have been implemented in there already, but I am quite a github amateur....