If you want to use this feature a lot, I can really recommend Distimo (http://www.distimo.com/). This enables to see some history of your apps, when they were released for sale, and with which version number.
So I guess that Distimo will surely fit your needs, because it does a lot more than that. Keep in mind that in can sometimes take up to 24-48 hours to have all your data. But I find that it is really worth waiting for.
A like is always appreciated, but a nomination for BB Elite even more :-) You can also contact me on Twitter: @ndsmyter