NyARToolkit for Android licence was updated to LGPLv3.
Source code header and bundled licence text were updated in NyARTK4.nyatla branch.
Source code header and bundled licence text has been updated in NyARTK4.nyatla branch.
Other branches are not updated.
These branch will probably available on LGPLv3. However,should contact to commiter if you require completeness.