Most of the 19 new countries will take up places within Africa and the Caribbean/Central/South American regions, although there are still a handful of countries which will be catered to within the Asia/Pacific, not to mention a tiny island located in the sunny Mediterranean. Do bear in mind that Trinidad and Tobago have been listed separately, and with Google making reference to “regions”, that might be a little tricky.
Basically, the new countries added are the Bahamas, Bolivia, Guyana, Honduras, Jamaica, Trinidad and Tobago, Angola, Botswana, Madagascar, Malawi, Mali, Mauritius, Mozambique, Namibia, Tanzania, Fiji, Nepal, Sri Lanka and Malta.
None of these additions have been depicted to feature limited coverage by Google, so it might very well mean that one will be able to enjoy full driving and walking directions at the bare minimum.