That is a good question and something that hopefully time will tell. Namco released a teaser trailer onto the internet teasing a new installment in the Pac-Man saga:
Pac-Man Battle Royale. Unfortunately, the trailer offers nada, zip zilch, zero in terms of information. All that we know for sure is that the game is getting its official preview / unveiling at the 2010 Amusement Expo which will be held in Las Vegas next week.
Personally, I have my fingers crossed for a new take on the Pac-Man Vs. game that was released on the Gamecube quite a few years ago. That game was an awesome multiplayer spin on the classic Pac-Man formula which required both Gameboy Advances and a Gamecube to be played. I think that the Amusement Expo is an interesting venue to debut the game at considering this is an "arcade" style expo and not a console gaming event. Could Pac-Man be coming back to the actual arcades after all of this time? We will have to wait and see...
