Tony, the way I break it down is:

1. Performance Interventions are everything that you can use to improve organisational performance (the first bulleted list in this post plus Instruction & Training)

2. Within these interventions you have learning interventions and non-learning interventions. A typical non-learning intervention would be a financial bonus system.

3. Of the learning interventions, some are instructional (training) and some are non-instructional (job aids). They each involve learning, but not instruction. For instance, a job aid can be used after training, in order to remember tasks that need to be done infrequently. An analytical tool to determine what tasks are suitable for training is a DIF analysis: http://jarche.com/?p=400

As for the new array of tools, I would include blogs, wikis, social bookmarks, podcasts and collaborative software such as Writely and Gliffy. They are not all that new, but they are now cheap and plentiful.