I want to follow the most up to date developments of Bitcoin, (such as M of N transaction confirmation).
Who are the primary developers of Bitcoin and what is the most efficient way to track the progress of this and similar activities?
I'm interested in reading either a detailed activity view, or a high level bullet point of key developments. Ideally someone would offer both information formats as an answer.
A nice summary view would include the following ideas and a status on testnet and on the production network: