The Phoenix Wright: Ace Attorney Trilogy pack will include all the three games in the seris: Ace Attorney, Phoenix Wright: Ace Attorney Justice for All, and Phoenix Wright: Ace Attorney Trials and Tribulations.
All of the above mentioned games will be remastered in HD and the controls will be fine tuned for the iOS platforms.
Capcom has confirmed that the game will be released this autumn for iOS 5.0. Also note that users have the option of either buying each game individually or get the whole bundle.
If you’re unsure then you can go ahead and try the free demo in which you can go through the first two chapters.