The page goes on to mention that a date for Pocket Realms to start back up again is unknown at this time, and if when it does come back on it will still be in beta. Pocket Realms is currently in a closed beta, and when it is completed will be a paid service by Mojang.
The post does have some better news though, as seen above wolves are currently being added to PE 0.9.0. The above picture is captioned with, "We’re working on restructuring a lot of code to allow significantly bigger worlds in future updates. We’re also updating the AI, inventory, and a bunch of other things. Unfortunately we don’t have a release date yet, but so far, everything is going to plan."
So there you have it, Pocket Realms is shutting down for an undisclosed amount of time and wolves are confirmed for Pocket Edition 0.9.0. You can see the original post in the source link below, and let us know in the comments what other mobs you would like to see in 0.9.0!
Source: Mojang