Similarly, equipment bought long enough ago may have no upgrade path.

Doesn't appear to be a direct upgrade path so I'll follow the suggestion for running a second box.

The upgrade path is simple and can be undertaken whenever the relevant skills have been learned.

Along the way nothing has been lost from the original system and there were no closed doors to the logical upgrade path.

MS said there was no upgrade path from 32 to 64, it has to be a clean install.

Midori is also claimed to offer an upgrade path from current Windows.

And from what I understand, the details of the upgrade paths are quite vague.

So what's next on the upgrade path for model railroaders?

Weapons are no longer given out in neat piles with an easy upgrade path.

What's their upgrade path, what support will they get over the several years that a handset should last etc?