Nope...I sent an email to help at shopblackberry - not very helpful:
Thank you for contacting us. We are sorry; currently we do not have an update on when a Powerstation cradle will be available for the BlackBerry Curve 8900.
Once the item is available, it will be listed on our website.
Your customer number is 400217122
Please refer to case #:: 400458844 if you have any further questions.
Olivia L. at ShopBlackberry.com Support
Thank you for the response. When will a powerstation cradle be available for the 8900?
Subject: In response to your question, your customer number is 400217122
Sent: May 17, 2009 7:59 PM
Thank you for contacting us. I understand from your message that you are looking for a PowerStation which would be compatible with you BlackBerry Curve 8900. We are sorry to inform you that we do not have a PowerStation Cradle for the BlackBerry Curve 8900. We would also want to inform you that the PowerStation Cradle for the BlackBerry Curve 8300 series would not be compatible with you BlackBerry Curve 8900.
Balachandra A. at ShopBlackberry.com Support
I saw BlackBerry Power Station cradles for the Bold, but did not see one available for the Blackberry 8900 - when will this be released? I bought a Blackberry Power Station unit ($200!!!) for my Blackberry 8310 and hope to be able to use it with my 8900.