You can identify the widget number by viewing your page's source code. Simply right-click on the page (away from any background images that exist) and click on View Page Source or View Source. Use CTRL + Find to search for the widget's text. Once you find it, look where the text starts and you should see something like this:
Whatever number is after the hyphen is generally your ID number.
As far as an update, I'm not sure of exact release date. Once Kriesi is done with an update ThemeForest does their own review so it may be anywhere from next week to several weeks. You can keep checking back here or follow Kriesi on Facebook or Twitter.