-A new calendar of upcoming album release dates for artists in your library
-Provides links to pre-order upcoming albums
-Lets you share your calendar with your friends
-Lets you see your friends' calendars
-Lets you highlight shows you care about for easier reading (and to share selected shows only)

http://www.iconcertcal.com/news.php#Version1_2

Version 1.2 is now available! There have been a lot of improvements over version 1.1 and everyone should upgrade. iConcertCal now:
Has greatly improved concert listings in North America thanks to a new feed from CelebrityAccess.com
Has greatly improved concert listings for the UK thanks to a new feed from NME magazine
Allows calendar exporting to iCal format
Allows you to add concerts that are missing
Lets you specify exactly which iTunes library you want to monitor (for those of you who keep you library on a central server)
Has an easy way to list extra artists to either include or exclude in your searches
The city and state of the venue are now displayed in the header information
Also, we have made a large number of important bug fixes that make this version of iConcertCal much more stable and perform better than earlier versions.