iPhone app update

I have an iPhone app and I need to update it to have a few extra features. The features are: 1. Ability to have multi language support. For example now its just in English, but i would like to add an option that would allow users to change it to Spanish/Portuguese/French etc (For this update only Portuguese) 2. Ability to add a search filter ability. At the moment the app displays a list of hotels, and i want users to be able to filter it by stars or hotel group. Please let me know if you need any more info. Thank you