The Windows Phone team is set to enable AppHub access for developers to 23 more countries, which were announced late last month by Joe Belfiore, in the next two weeks. Where will we be seeing this new support? Bahrain, Bulgaria, China, Costa Rica, Croatia, Estonia, Iceland, Iraq, Israel, Kazakhstan, Latvia, Lithuania, Qatar, Romania, Saudi Arabia, Slovakia, Slovenia, Thailand, Turkey, UAE, Ukraine, Venezuela, and Vietnam.
Todd Brix states that after this batch of countries is rolled out, the total number of supported countries will be bumped to 63 - an impressive amount of targetable markets for platform developers. Do note, however, that there may be some issues with some of the newly added markets, as Brix explains (and Carbon found out):
"Keep in mind that some new markets— Bahrain, China, Indonesia, Iraq, Kazakhstan, Malaysia, Qatar, Saudi Arabia, and the UAE—are subject to additional certification requirements due to local laws or norms. Check Section 3.10 of our content policy for more details."
As a final note, it's warned that app submissions are taking up to seven days to certify due to volumes, and this delay may well increase. Something for developers to be aware of when submitting apps with a published date in mind.
Source: Windows Phone Developer Blog