Even if google would completely disclose their roadmaps, people would find something to speculate about.
Android and Me
There would be another extremely vocal group which is "not impressed" no matter what google offers.
Techcrunch
Another vocal part will hate the changes, you just can't please anyone.
app developers
And another which is bored and "not excited anymore" since anything they get is old news (was announced like 6 months ago).
xda