Yeah, renaming things is always painful. We're renaming the project because "GraphQL" is owned by Facebook and we don't want any trademark disputes down the line. We've mentioned the rename in a number of places but I suppose we could always add it to more places - where would you suggest?

It's worth noting that the entire GraphQL schema generation in v4 is a ground-up re-write (that's where the "graphile" comes from - it was originally a separate project), we've kept the top level APIs from v3 though (e.g. the web layer). This has enabled the performance improvements, plugin system, and greater customisability.