Why oh why doesn't Google have a 'new changes' section that documents these advancements? So annoying.You're great things, Google! Tell us about them!
I agree, poster_boy, and I think you will find this changing in the near term. For example, there is already a place online where most such changes are announced. For example, today, the "Copy or move keywords/Ad text to the new location" feature that led off this thread was discussed.
And, many days ago, there was substantial mention of item two mentioned above, the separate bidding for the content network.
And while the WebmasterWorld TOS prevent me from saying more - this resource is absolutely available, and has been for many months.
BTW, I am also working towards making a "recent changes" page happen on the site itself as well. So thanks for your comment poster_boy. I'll quote you! ;)
AWA
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BTW, I am currently unable to access WebmasterWorld on a regular basis. I have not been able to read or post for the past 30+ hours, for example - so please forgive my lack of response. I hope to have this resolved soon. Lastly, I will most likely not be able to post tomorrow at all, just to set reasonable expectations.