Questions re deciding what version of Android to target in 2013
<p>I'm an experienced Java programmer but new to Android. Two basic questions:</p>

<ul>
<li>as of now (i.e. let's say, an app to be released early 2013), what Android version should one be thinking of targeting to cover a reasonable majority of devices? Has this changed, for example, from the <a href="http://stackoverflow.com/questions/8335302/what-android-version-to-target">advice given a year ago</a>?</li>
<li>as I understand, whether or OS updates are available on Android devices is down to the manufacturer. In practice nowadays, what indication can we get as to what roughly what proportion of devices allow the user to update the OS version?</li>
</ul>

<p><strong>Please note that I am asking for answers based on factual information about the current state of affairs regarding Android installs and not asking for a "debate" about the morals of programming for different APIs as for some reason seems to have been assumed by the trigger-happy closers.</strong></p>
