I just received this from TC electronic per email:
Future development of the PowerCore platform has been ceased
As part of a larger strategic review, we have decided to cease further development of the PowerCore product range, including hardware units as well as software for the PowerCore platform. With the most recent release of software version 4.0, PowerCore is fully compatible with current operating systems, such as Mac OS X Leopard, Mac OS X Snow Leopard, Windows XP, Windows Vista and Windows 7, as well as the most popular DAWs - 32 bit and 64 bit.
We will continue to sell all of the existing PowerCore plug-ins (through dealers and www.tc-now.com) and hardware variants. We will also keep offering user support for the platform so you should be able to continue using your current system for quite a long period. Bugfixes will be handed on a case-by-case basis.
Also, it is very important to stress that we will continue our general computer recording activities, including audio interfaces and plug-ins.
Finally, for those of you, who wish to continue using externally powered plug-ins on the long term and want to find an alternative to PowerCore, we have collaborated with Universal Audio in order to create an attractive UAD-2 crossgrade offer. The only condition is that you are new to the UAD platform. Read more about the crossgrade offer here.