The achievement progress indicator will be rolled out in about three months - which is around the time I'll have completed my collection of badges, I'd say.
A number of we glitches have excitedly asked for some sort of progress indicator for achievements. I might have even been one of them but don't feel like slogging back through he ideas forum.
I'm happy for the quest indicator, esp for the newly minted glitches.
Take heart that we have this, as I'm sure it's a sign indicating progress towards the achievement one.
Somewhere a dev said the progress indicators would probably be only a single achievement lookup at a time. It'll most likely be in the API so you can just not use it if you don't want to.