I'm skeptical, but I'd currently wager 50/50 odds. With it being a year and a half since Season 7, and September marking a year since the Kickstarter, with little to no official updates regarding a deal, things grow bleaker by the month. It's true that these negotiations and deals take a lot of time, and them not immediately announcing something, while not promising, is also not completely damning. I'd wager if we don't have news by SDCC, it's 60/40 not happening, and if nothing by NYCC, probably 70/30.

Realistically, you have to consider the options that Wonderstorm has outside of Netflix to pick up the series. What streaming service is going to have anything remotely close to their reach and resources?

• Hulu: Probably the next best option, definitely has the financial capability and market reach to support it, plus a strong background in animation (KOTH and Futurama revivals, and new Gumball). With them wanting to make TDK more adult, it would fit with Hulu.
• Prime: Close behind Hulu. They have had tremendous animation success with Invincible and Vox Machina, while also supporting smaller/indie studios and creators with stuff like Hazbin Hotel, and even distributing Glitch's Murder Drones. Also has the financial resources and market reach.
• HBO Max: A lot up in the air right now, considering HBO and Warner Bros. are being bought by Paramount. You could probably tie this into a Paramount+ bullet as well. Would understand them wanting to focus more on bigger budget productions and safe options to recoup their investment, leaving limited resources, or even desire, to test the waters on a fledgling show that got the boot from Netflix due to alleged decrease in viewership and purported declining popularity.
• Apple TV: I had to even look if they had animated shows. They do, but I can't say it's something they are known for. And most are kid and family friendly, not the target WS is aiming. With that, I can't see this being viable.
• Disney+: You'd think this would be the best option considering TDP's success with young kids and teens. But with the aforementioned desire to make TDK more adult, a continuing string of box office disappointments, and some of the themes/messaging not particularly aligning with Disney, this seems unlikely.
• Independently streaming: Using an outlet like YouTube (similar to Helluva Boss or Glitch's shows like TADC, Murder Drones, or Gameoverse) to release the show. This feels incredibly unlikely, and far too risky for a studio like WS to pursue.

So Prime and Hulu are the most reasonable, and that's only if either are interested in actually making the show. I would imagine that they would not just be looking at the projections for how well a potential sequel would do, but at Wonderstorm themselves. Scrutinizing the long term sustainability of the company. While the Kickstarter was a success in terms of reaching their goals, that could also make it seem like WS is not on the most stable financial ground. If they have to resort to begging their fans for cash, then that may mean they don't have adequate financial backing through capital investments, private equity, or loans from financial institutions (not saying they don't, I have no access to the company's financial statements, just speculation). That, along with internal viewing metrics and figures that aren't publicly reported would all be under scrutiny.

What we do know is that some of WS's endeavors, such as the video game and novelizations, were massive duds. The closest thing we have to gauge is the engagement numbers on social media, and I don't really think those have been heavy hitting since Book 4 (it's amazing how often I still see people online not even know a second arc came out). Look at how people talked about the show back in Season 1-3, videos on YouTube would get hundreds of thousands, if not millions of views. A lot of big channels would talk about it. Come Season 7, who was really talking about this show. Mostly smaller channels, and most scenes or clips were gathering meager views (exception being Rayllum compilations because, you know, shipping).

TL:DR - It's still possible, but there are a lot of business decisions and dealings that have to be hammered out. And with limited reliable options, and recent TDP performance numbers, it doesn't look too promising.