An nice feature would be an RSS feed for new releases. Also if you had an RSS feed the application could check the RSS feed itself to see if there had been an update.
But RSS means it would appear in my Google Reader "New Releases" folder with all the other (about 8 so far) programs that have feeds associated with them.
It is something we are looking into, but currently we are focussed on getting the 16xx builds polished up and out on general release. Once this is done we hope to look into things like this a bit more.
For now you can always turn on:
VA Options -> Startup -> Automatically check for new version VA Options -> Startup -> Also check for new beta version
not quite the same, but it does tell you when something is available