I guess that means BlackBerry PlayBook OS 1.0.6 is already in the making.  RIM did promise us native email and PIM at BlackBerry World 2011, so an update has to come eventually.  Also upon receiving our BlackBerry PlayBooks, we were told there will be many updates for the tablet to enhance the experience every time.  So it looks like OS 1.0.6 got out in BlackBerry Beta Zone, but not for everyone.  According to N4BB, select developers had it pop up to test their apps in.  Here’s the official note from RIM:

“On behalf of Research In Motion®, we are pleased to tell you about an exclusive Preview Program focused on providing developers a chance to test their applications on BlackBerry Tablet OS v1.0.6. The goal of this program is to ensure that your AIR 2.7 and Flash 10.3 applications are optimized and ready for the BlackBerry Tablet OS v1.0.6 release. Please read this entire notice, as it contains key information about your participation in this program.

This program is only available to a select group of BlackBerry PlayBook developers; as such we are very interested in hearing your comments and experiences. Since the program will remain open for approximately 1 week, it is crucial to submit all issues and feedback in a timely manner. Please use the programs discussion boards and share your experiences with us. RIM moderators will review.”

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