With the new weatherlink 2.0 app, will the current data refresh automatically every minute or would I need to "manually" refresh it?
I don't know, but wouldn't particularly expect it to be any different from the standard browser presentation, which - in WLC1 at least - is set to refresh itself every 5 minutes. The weather doesn't really change much from one minute to the next so what's the point in it refreshing more often? Just adds to server load for no good purpose AFAICS. If you could refresh every 2.5 secs then it would be a different matter because then you could see individual wind gusts - if that mattered to you.
But the maximum upload frequency to WLC is every minute, so live wind data is not possible, hence there's little practical difference between 1 and 5 minute updates (though you can of course refresh manually and override the 5-minute auto-refresh if you wish to see a more frequent update).