Yes Panasonic have just announced this little beauty which is a dual VoIP and DECT landline phone that works with Skype, you can use this phone to call other Skype users free with no charges what so ever other than buying the phone. It will work in the same way as other Skype DECT phones and will automatically route your calls accordingly like if you ring through skype its free and you can also use this phone to ring landlines.
They say that this phone will hopefully be available for Christmas 2006.