we're in between patches, and unless there are more newly discovered bugs or changes, there's not much pet-related stuff to report. patch 4.3 could be on the horizon, but there's no guarantee that it will bring us new pets or information related to non-combat companions.
i suppose that's just the nature of collecting, though. unlike PVE where blizzard is constantly needing to pump out new material to keep interest up in the game, vanity pets and items are still seen more of... well, vanity. it's a way of gameplay for some, but still not enough to make pet creation/installation a priority or be placed as a definite "to do" on blizzard's list of upcoming content. that being said, i think they're definitely getting better when it comes to consistently adding new pets compared to previous expansions where months and months could go by without so much as a hint of a new companion. dare i say maybe we've gotten a little spoiled when it comes to new pets on a regular basis? :P
it should be kept in mind for those who've collected all that they can for now, that while we don't have a whole lot to go on at this very moment, the future does hold some pet goodies that we simply have to be patient and wait for. there's the blizzcon redeemable pet, the upcoming throne of the tides common companion loot card, and we can't forget all those previously datamined pets that could possibly pop up at any time. it's just a matter of time before we become overwhelmed with the number of pets we need to collect again!
one thing that i hope 4.3 does NOT bring... another mount hyjal-styled daily unlocking storyline. it was interesting and satisfying for one patch, but some variety would be nice. rather than a repetition of dailies, perhaps just one long, lore-filled, heartfelt quest chain with a companion side quest snuck in there somewhere? the overwhelming success of the lashtail hatchling quest chain could be a model and provide some inspiration for future pets, yea? or maybe some ingenious and innovative developer at blizzard has a totally new way of obtaining vanity pets that they're saving for an upcoming patch. who knows?