Paul Kuharsky just posted this chart on his blog that lists the franchise and transition tag numbers for the 2010 season. The transition tag is a new tag that is in place without a CBA has apparently always been there. It is an average of the top 10 players salary at the position (or 120% of the top salary whichever is greater) instead of the top 5 like the franchise tag. Each team gets one franchise tag and one transition tag to use if they chose to do so.
Here are the numbers for each position for 2010: