If you want to know when Tableau released what, just click | Tableau Public which is one of the first Tableau viz that I shared in Tableau Public. I am pretty much a Tableau server guy and I am not a Desktop visualization expert. However I am inspired by Alexander Mou ( Tableau server admin) who has created tons of beautiful Tableau viz shared in the Tableau Public. Tableau Desktop does have two or three learning curves but is still easy to use. If business people can create nice Tableau viz, IT people can do it too. You can click my profile | Tableau Public to see a few other viz that I created.