Arrow is present on meta
but not on Area 51
Not even an envelope!
We just added the dropdown to Area 51.
Like the rest of the SE network, it features profile/activity/privileges/logout links, posts on which you recently gained or lost reputation, as well as badges earned in the past 24 hours.
However, it doesn't yet show a grid of reputation and revisions in the past day/week/month. We'll likely add it in the future, perhaps more urgently if people request it.