With previous rumors of an Ultimate variant of Game Pass for $14.99 being confirmed back in April, and the announcement that the subscription would be coming to PC too, there were a few details left to fill in. A couple of them now have been, ahead of Microsoft's Xbox Briefing later today.
First off, courtesy of Aggiornamenti Lumia on Twitter, there's the PC version of Game Pass, which we now know costs $4.99/month, though Insiders do get the $1/month deal while it's in testing.
From its Store page we can find out a few more details like specific discounts for those who want to own a game that's currently in the Game Pass rotation. As part of the membership, you'll get up to 20% off the price of the base game, and 10% off the price of various DLCs. In addition, you get access to the usual, ever-growing library, with Halo: The Master Chief Collection, Gears 5, Forza Horizon 4, Hello Neighbor, Hellblade: Senua's Sacrifice, Sea of Thieves Anniversary Edition, State of Decay 2 - the predecessor to which was being tested via the Insider Program -, Ori and the Will of the Wisps, We Happy Few, and Ark: Survival Evolved being among the featured titles, presumably for the upcoming beta.
In addition the Game Pass Ultimate store listing also surfaced carrying the previously stated $14.99 price tag. As expected, it combines Xbox Game Pass and Xbox Live Gold into a single membership, with the same 20% off the price of game purchases and 10% off DLCs and consumables listed for the PC version.
While Game Pass Ultimate is available for Insiders to test and slated to general availability later this year, the description for Xbox Game Pass on PC still lists the same FAQ and details as the Xbox equivalent. More will probably be revealed at the Xbox Briefing later today at 1PM PT.
Update: Both Xbox Game Pass for PC and Xbox Game Pass Ultimate are available now, and the $1/month offer is available to non-Insiders too. Do be warned that Microsoft is structuring this offer in such a way that the number of Xbox Live Gold and Xbox Game Pass months you have left on your account will be factored into your upgrade to Ultimate. Because of this, it's best that you stock up on Xbox Live Gold before you choose Game Pass Ultimate.
And yes, Game Pass Ultimate includes Xbox Live Gold, and both Game Pass for PC and Xbox Game Pass for console.