It seems a wave of console ports are inbound to the Steam Storefront, if the recent leaks from the Steam Helpdesk are to be believed. Neogaf users Madjoki and Lashman posted a list of titles previously absent from the Storefront, yet curiously listed as topics on the Steam Helpdesk service.
Among the listed game were previously console-exclusive titles like Rise of the Tomb Raider, several installments of the Danganronpa franchise, and the Final Fantasy X/X-2 HD Remaster. Also included was Dark Souls 3, a hefty collection of Ty the Tasmanian Tiger games, and Guilty Gear Xrd -SIGN-, as well as the ever-present Half Life 3. There is no indication of a time frame of release for any listed title, and nothing is ever quite certain when it comes to leaks like this.
For a full list of titles, head on over to the Neogaf thread.