They developed the Switch WITH 3rd party people. Of course it will get 3rd party support. The pre-orders on the Switch seem to be through the roof. Also, the Switch is a portable system. You need to compare it to a Vita to be a closer match.
The Switch can run the Unreal Engine 4 pretty damn well. So you can expect games to be ported to it and the ARM architecture is very common today, so it won't be to hard to make games run decent on it.
The Switch can run the Unreal Engine 4 pretty damn well. So you can expect games to be ported to it and the ARM architecture is very common today, so it won't be to hard to make games run decent on it.