Quick summary of the article:
IGN's article is based on loose translation of famitsu scans (which are included in the full story of this article).

Multiple Main characters

The detective's name

There's a save file function in the menu now, so you won't have to be searching for glowing lanterns (or cameras!) anymore!

More on Ruka's memory loss

Spoilerish stuff:

4 playable characters, the three girls (Ruka, Madoka, & Misaki) & the detective

The detective's name is Choushiro Kirishima

Ruka apparently lost her memories after the abduction

Ruka was a native resident of the Island

The famitsu article shows images of the Detective & Ruka, it appears as though the detective is searching the previously mentioned hospital.