WMG / Halt and Catch Fire

Joe is ready to deep-six his antivirus company and needs someone to take the fall for it

This is why he's so willing to offer Gordon a controlling interest in MacMillan Utility, and offering during the lawsuit deposition was just his way of trying to one-up Gordon in the event he refused. (For clarification, Joe's personality seems to be prone to thrill-seeking - e.g. surfing - and as such he likely gets easily bored after initiating new projects. It would be in character, as unintentionally pointed out by Ryan, for him to already be looking for the next new thrill to experience in the computer field.)

• Confirmed, sort of. His revelation that he did, indeed, steal the anti-Sonaris code from Gordon ended up costing the company a lot of money, but the company was still worth some money which Gordon took along with an apparently worthless project of Joe's. It was, however, Ryan Ray's rash act of releasing the Citadel source code that truly did in the company as it lost all of its profit potential.

Mutiny will go under because of an earthquake

It's unlikely Mutiny has the proper insurance in the event of an earthquake, and San Francisco is prone to them. The 1989 Loma Prieta earthquake is not too far off, and it is entirely possible that the structurally unsound building might collapse.

• Jossed. Mutiny failed before the earthquake, but the building did become slightly unsafe, the floor collapsing just as Joe stepped on it.

Joe is trying to repeat his experience with Gordon when they hacked the IBM PC BIOS.

Joe invited Ryan to "work out of his place". Just as the Giant originated in the clandestine IBM PC BIOS reverse-engineering Joe and Gordon accomplished over a weekend in Gordon's garage, so too will Joe's new project originate in a clandestine tete-a-tete with Ryan at a computer. (As Cameron noted, he loves to make a person feel special if they are at all useful to him, but there is no real emotion behind the attachment he portrays for the other individual; they are just means to an end for him.)

• Confirmed. He and Ryan use Joe's idea of learning about the ARPANet, and realize that there are bandwidth bottlenecks that could be overcome by the right company at the right spot, and position Joe to be in possession of one of the major new backbones of the NSFNet whose income stream would only grow once it becomes privatized.

SwapMeet's founders were going to take the money and run

SwapMeet's sudden "lean and mean"-ness and the relatively nontransparent disclosure of their business's condition suggests that they were going to cash the $600k check and run for the hills, sticking Mutiny with an unprofitable business they would have had to expend more money on to make the marketplace on Mutiny a viable proposition. Bosworth saving the venture capital firm $250k basically freed up about a year's payroll for Mutiny.

MacMillan Utility will become the first dot-com

... albeit ten years before the term became widely used for Internet startups with a heavy web presence. Joe has already spotted that the ARPANet could have commercial potential if it is ever privatized (which it was, in 1992), and wants to get in position to realize the benefits of facilitating interpersonal communication between far-flung computer users.

• Jossed. The company's board of directors deep-sixes the deal with the NSFNET controllers.

Joe has AIDS

In "Yerba Buena" he is unusually somber and says "I may not have another next in me". If he knows the clock is ticking on his own life expectancy (the guy he was sleeping with showed up at his apartment/condo in an agitated state the previous night), that could explain his own sudden sense of finiteness.

• Appears to be Jossed. As of the Season 3 finale, set in 1990, he is still as healthy as he was in the mid-1980s.

Cameron is about ready to pull a "Joe MacMillan" at Mutiny

Cameron believes that Mutiny has deviated too far from her original vision. With Cameron's ego irrecoverably tied to Mutiny, and given her lack of impulse control, she may end up burning bridges and walk away from the destruction.

• Confirmed. She tries a game of brinkmanship versus Donna, demanding a vote on the IPO after a heated argument. She ends up losing badly and leaves Mutiny, shell-shocked.

If Cameron had gone with Donna...

They would probably have ended up admitting an attraction to one another. Cameron seems unusually conflicted over the fact that she is married, and even termed the getaway 'romantic'.

Gordon's mental issues are affecting his judgement

There are things he's done which seem uncharacteristically rash, such as not waiting to see if Donna would slow down on the push to get an IPO, or deciding once again to partner with Joe MacMillan.

Gordon and Donna will eventually get a divorce

Gordon and Donna's marriage has been in dire straits since the failure of the Symphonic at COMDEX in 1981. Several events since then has nearly precipitated a divorce (the Giant project in general in 1983, Gordon's affair in 1985, and Mutiny's failed IPO in 1986), and some event down the road in the late 80s or possibly early 90s will be the straw that finally breaks the camel's back, assuming it wasn't the latter event.

• Confirmed; however, the event that finally triggered the divorce is not revealed.

Mutiny will become one of the first dial-up ISPs

In addition to issuing the first (if not one of the first) web browser, they will also capitalize on the name and previous experience wrangling dial-in computer networks to become a major San Francisco, if not California-wide, ISP.

• Jossed; however, Joe and Gordon do form a new ISP out of the former Mutiny offices.

Donna will undergo a Face–Heel Turn and become the Big Bad of the fourth and final season

After Cameron kicks Donna off the World Wide Web project, the latter calls her office, telling her receptionist to arrange a flight to Switzerland, so she can meet with CERN. Donna intends to sabotage Cameron, Gordon, and Joe.

• Jossed. While Donna does indeed compete against Joe, Gordon, and Cameron as search engine providers, she doesn't actively try to sabotage them.

One of the main characters will die by the series finale

Most likely Gordon due to his toxic encephalopathy since its effects are irreversible.

• Confirmed. It's Gordon.

The show will end the same way it began.

Things will either go well or not, but the series will end with Joe leaving everything behind and drive off. He will stop at a new place after hitting an armadillo, much like how we first saw him at the start of the show.

• Jossed. However, Joe has the same type of car and wears a similar suit to how he did in the first season, is seen in a college classroom, and the show bookends on the very first line he spoke: "Let me start by asking a question."

The Giant will become a cult classic retro computer and Cardiff Electric will become a retro logo/product.

Years after the end of the events of the show, similar to Atari and Commodore, Cardiff Electric will become a retro-product company. And much like the Commodore 64, the Giant will become a cult classic in the retro community. During that time, someone finds the ROM board with Cameron's original OS and release it out on the net. Due to the double-sided design of the motherboard, as ingenious as it was, resulted in problems when trying to replace the chips and resistors, leading to some users doing limited runs of replacement parts for it or repurposing the case for modding purposes (such as replacing the monochrome screen with a colored screen and replacing damaged motherboards with a Raspberry Pi).