Yeah, between vacations, 4 year old's birthday, extended family visits, close family tummy bugs, and the day job, things slowed down a bit. Ok, a lot.
In any case, I have been working on a few things. Primarily I'm working on a 'remote control' mechanism that would allow one to turn on SubFire on the TV or a primary computer and then control it from a tablet. Useful if, like me, your server isn't the box that's connected to your best sound system, and you're too lazy to keep clicking around with the Fire TV's remote. (This idea inspired by Plex's approach to casting).
Once that's done, the same general interface can be used for Chromecast and Jukebox control.
In addition, I've just finished adding the more secure md5 version of the API implementation for 5.3beta servers, with graceful back-tracking to the enc mechanism for older servers. If there's enough interest (as in, comments posted here), I may cut an early release of just that feature without the half-finished remote-control stuff.
It will certainly help with plain http security given that SubFire, along with most HTML5 apps, can't deal gracefully with internally signed certs due to browser CORS security (which a customer just confirmed, is an issue with Fire TV/Stick as much as it is with Chrome).
Joe