I see that the API v2 has now been released for general use, i.e. it no longer has beta status. The token necessary for API v2 use is freely accessible from a user’s main account page (i.e. the user’s account page not a station config or data page).
NB It is still the case that the API v2 is only for use with EM and WLL stations. Other station types should continue to use the v1 API. Users need to be clear about using the correct API and token type to access the particular station data that they’re after.