As of march 2015 it is possible to submit updates in all countries. However there are two levels of updates: 'live editing' and 'feedback' (see glossary for more details).
'Live editing' is available to all users only in a limited amount of countries (a bit over a 100 countries), feedback is allowed in all other countries where live editing is not possible.
If you would like to have full 'live editing' rights in your country, or even could imagine to set up a new
community of local map creators -- just let us know by submitting feedback in the country you would like to edit. After you submit your first feedback you can apply for full live editing rights. Just follow the instructions the system provides.