A new version of Mighty Switch Force will be available in the Nintendo eShop starting May 24th. Players who already own the title can download the game again for free. When you do, you will receive the bonus content listed below. Newcomers will receive all bonus content included with their purchase.
Bonus content:
5 all new bonus levels
Enhanced stereoscopic effect to all previous levels
By popular request, a “retry” button for dedicated speed runners
Source: gonintendo.com, wayforward.com