In the 4.5 Preview notes, we actually snuck in a hint about improvements in the API. 
For examples and more reference docs, as soon as we get things written/recorded/created (which goes for all docs, not just C++), we do try our best to get them out to you all as soon as we can. Lots of things currently in flight over here with the doc team - seriously, take a peek at those notes! So happy to hear everyone excited for new documentation, thanks for the feedback, and stay tuned!