CNN had this posted this morning. Part of the proposal of extending the 8k first time buyers tax credit will may also include an extra 6.5k on top of that for current homeowners that have established a 5yr residency in their current home.
The $6.5K is not on top of the $8K. Current Home owners who have lived in their home for 5 years or more and buy a new home by the end of April 2010 would just get a $6.5K tax credit. First time buyers would get an $8K tax credit with the dealine extended to the end of April 2010.