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I've no idea what you mean. What "announced solutions" are you talking about?
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For example, video cards with nVidia chips that provide HDMI 1.3, i.e. a/v transport over HDMI. These have a protected BIOS (using public/private key cryptography), and only players signed against that BIOS will be able to send HD audio/video over the HDMI connection.
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So you're claiming that PowerDVD and WinDVD will support TrueHD bitstream transport but not multichannel PCM transport?
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No. I'm saying that PowerDVD and WinDVD can certify to the protected video path that they're secure, and they can honor the DRM flags in the source. So if you're playing a DRMed HD disc with either TrueHD or PCM over HDMI it will work, but it won't for arbitrary PCM streams. PCM over HDMI is not something that is "just there" in the system. You need a specific player software, a specific driver setup, and a specfic video card BIOS (because HD audio over HDMI is routed through the video card) for all of this to work.