There are about 13 free Apps compliments of BlackBerry UNTIL 31 DEC 2011. After that I'd expect they go back to regular price. Some of these apps are quite pricey hence its great to get them while their free!
If you go to App World on your mobile you should see an Ad/Announcement on the front page, click that and it will bring you to the list.
DriveSafe.ly Pro by iSpeech.org - $19.99 USD value
Bubble Bash 2 by Gameloft inc - $4.99 USD value
Bejeweled by Electronic Arts Inc.
Shazam Encore by Entertainment Limited - $5.99 USD value
Vlingo: Virtual Assistant by Vlingo Corporation - $19.99 USD value
SIMS 3 by Electronic Arts Inc.
SimCity Deluxe by Electronic Arts Inc.
Photo Editor Ultimate by Ice Cold Apps - $1.99 USD value
Nobex Radioâ„¢ Premium by Nobex Technologies Inc. - $9.99 USD value
Texas Hold'em Poker 2 by Gameloft inc. - $2.99 USD value
N.O.V.A. by Gameloft inc. - $4.99 USD value
iSpeech Translator Pro by iSpeech.org
Drive Safe.ly Enterprise by iSpeech.org - $79.99 USD value
I'm not sure of the value/RRP of some of them but I personally am liking Shazam Encore free as well as a couple of the EA and Gameloft games free. Especially Drive Safe.ly Enterprise at a whopping $79.99 USD value. I have downloaded almost all of them directly on my BB9800.
I don't think this is a dupe. I know its similar to this: http://www.ozbargain.com.au/node/55190
However that has been marked as expired and not all the apps are the same.
Cool, thx for letting us know ! I wasn't aware of this. Rarely open the App World lol