JPN now have 20+ demo whereas Western have only like what 4 or 5 demo?
Most JPN Games takes a very long time to get localized and some don't even have a western release date which most probably means they are not going to be release outside of JPN.
Means either "there's more Western devs working on the 3DS now than last year"
"We're bringing more titles outside of Japan"
Compared to GB, GBC, GBA & DS there hasn't been that must support from Western developers but then times are harder nowadays for a lot of developers with many having to make mobile games instead to cover costs and by pass a publisher.
As for the possibility that this means Nintendo will localise more titles, that could have something to do with then pushing the digital content. Releasing a digital title is less risky than retail.