Is Roy going to be in Super Smash Bros Brawl

No, Roy is not normally in Brawl. However, if one softmods their wii, or even uses a modchip, you can use codes and texture hacks to place him back inside the game.

It isn't the exact same Roy from melee, but a recreated version replacing Marth. You can visit BrawlVault or Smashboards for more info.