The Zero Escape collection, gathering Zero Escape: Nine Hours, Nine Persons, Nine Doors (999) and Zero Escape: Virtue’s Last Reward under one package has been delayed in Europe until "later this year".
If you happen to live on the other side of that big pond we call an ocean, you'll be pleased to know that this collection will be released on March 24th in the US.
And you should be glad because both games are exceptional and quite a unique breed of a visual novel and puzzler. Both games have been remastered and have seen quite an improvement in art as well as full voice acting.You'll also be able to experience the pure Visual Novel mode that was on the iOS version albeit without the special ending that was featured in it.
If you enjoy your time with it you should also check out the conclusion to the story with Zero Time Dilemma, available now.