The idea you're probably thinking of is GeoPackage.
The background to the requirement came from the US Army Geospatial Center which is part of the Corps of Engineers, who were looking for a way to put maps and other information (points or interest, routes, photographs and other observations) into a simple "one file has it all" format for mobile applications. The original development was done on public mailing lists (one for vectors and one for rasters/tiles) on Google Groups.
When the OGC started the OWS-9 testbed activity, the development and prototyping moved into the OGC. The reasons for it are a little complex, but it does appear to have been done with good intentions. The only problem was that you had to be "in" the OGC world to see what was happening. The two Google Groups lists are basically dead.
As OWS-9 came towards the end, the OGC (prompted by the NGA and US Army Geospatial Center) spun up the standards working group (SWG) to develop a "proper" spec. The OGC has more detail on this.
The OGC specification development process was initially overseen by Paul Daisey. It was an interesting process in that it attracted a lot of external attention. Initial work was done in Microsoft Word, but it switched to development on GitHub. Note that the version on GitHub as markdown is not an official spec - its a work in progress, much like source code as it moves from official release to official release.
The specification is somewhat difficult to read (but hopefully hard to get wrong in the implementation stage). It tries to be unambiguous, not nice. The best way to understand what is happening is to find the diagram showing the table relationships. Stare at that for a while, and it might start to make some more sense. Then look at some sample data (note: may not be current to the latest spec).
There are a range of implementations (see the http://www.geopackage.org/ web site for links). Disclaimer: I worked on some of them.
As of early 2016, development of the specification has slowed, but there is a fairly open extension mechanism, and there is some activity to develop an elevation extension. OGC is sponsoring some member organisations to do other work in its testbed activities.