Garmin and mapsource

I think Mapsource is a great tool. It makes planning a lot easier on a computer. You can also merge together different maps into the same device. Topo, road maps and water maps always available for you...

But now it seems like Garmin is moving away from this scheme. Bluechart g2 is only sold as a memory stick that only works with your gps. City Navigator NT is much cheaper as a memory stick than as a DVD.

What are our options now?