What's the plan for built-in mongodb?

Continuing the discussion from Connecting to Mongodb:

I see there’s an installation of Mongo 2.6.10 available to my app, and have been able to get it running with a database in the .data directory… any plans to keep that Mongo installation up to date with the latest stable version? Should I be concerned about it disappearing without notice?

$ mongo --version
MongoDB shell version: 2.6.10
$ mongod --version
db version v2.6.10

Why care about the “built-in” mongo?

First, it makes my app much more remixable when the db is created on-the-fly without needing to provide additional credentials. I also can’t find any place that provides free/cheap mongo where traffic is encrypted (mLab doesn’t offer SSL until the dedicated tier)