Disclaimer: Materials are subject to change.
This has been a good week worth of research and countless emails to people, I hope this helps some of those anxieties with the Re format feeling abandoned, I am here to tell you we are indeed not
Reasonistas will be posting this on their site which will be updated regularly, btw thanks for the help with some organization.
Reasontalk thread will be updated regularly.
Rack Extensionists thread will be updated too.
(Current Developers)
AirRaid: working on a Re that has something to do with Granular ( Their tweets about grains kinda give away)
Alien Seed Tech: working on PSND 2.0 and Kron (Reasontalk thread)
Audiorealism: Working on a 2.0 update (Twitter tweet)
Audiority: Studying SDK (He's part of the Rack Extensionist group and has a lot of interest in the format)
Blamsoft: Released Expanse 2.0 w/ Propellerhead 9.2 Promo
Cube6/DNA Labs: Cube 6 is DNA labs, I for projects I'm not quite sure (Has stated they will be making Rack Extensions in the future on their website)
D16 group: Busy on projects but is planning more Re devices (various sources including Emails from various people, including myself)
Devoloop: Busy
DLD Tech: working on new goodies for 2017 (wants to do different stuff, according to post on Reasontalk)
e-Instruments: Small team and not Done with the format (Email and an insider)
Flower Audio: Personal Life stuff but wants to come back (Email)
G Force: They said their working with Propellerhead again and thinking of doing Oddity Rack Extension (Reasontalk Thread)
Heavyocity: Said they aren't done (via Email)
Jiggery Pokery: Released Harpsichord Re and updating BBD Series
Kilohearts: Released Tranisent Shaper and are apparently working on a new Synth (Teasing me on Twitter)
Kuassa: released Efektor series
Lab One: Matt has been busy but has ideas
Lectric Panda: Has a lot of projects for 2017 (Very vocal on plans on Reasontalk Forum)
LoveOne: Released Proton with Selig with Propellehead's 9.2 promo
Mathieu Demange: Working on second Re (Reasontalk Interview on RYMCast)
Nucleus Soundlab: Jeremy Janzen has been busy, Releasing the Reason Wizardry free on YouTube, When asked about Rack Extensions on Facebook he said there are plans for more and said second one is in the oven (Facebook)
Peff: Kurt has stated he has been busy with stuff and isn't leaving Re Development but says it's not cheap to hire a coder (Email)
PitchBlende: David has been busy, I gave him some ideas and he said they won't see light for a awhile (Email)
Pongrasoft: has been quiet and busy (According to activity, he has been active in 2016 that's why he's not in the unknown status)
Primal Audio: Updated FM4 not too long ago
PropellerheadSW Re Development Department: Common sense applies that they're developing something like they always are!
Quadelectra: Theodore has been developing some stuff (Facebook posts)
Ravenhertz: Recently update CV Series
Reasonistas: Noel has been working on his first Rack Extension and it'll be a workhorse from what he has said (This encyclopedia is part of Reasonistas)
Red Rock Sound: Very quiet guys but they released the RE3Q recently, Who knows what's in the oven now
Reveal Sound: Spire Rack Extension is in the works ( Videos on official Facebook Page)
Robotic Bean: He specified he is working on something (very vocal on Reasontalk forum, very smart guy)
Rob Papen: He said new Re will have Predator 2 features that'll come later this year (Has stated this multiple times on Facebook in his group and Rack Extensionists)
Samplemagic: They have stated they have the SDK and are looking at it (Email and friends who work there)
Selig: Has been busy lately but plans to make a come back soon. Work on his Concept "Proton" with developer LoveOne (Very active on Reasontalk Forums and has talked about stuff)
Scuzzy Eye: Developing stuff ( Has said so on Reasontalk Forums)
Skrock: Recently released Kraft and Solaris 2.0
Softube: Softube replied to my tweet with "we'll see" implying that they aren't done.
Sonic.bits: Friendly folks have stated they are working on their second Re and third (I asked them on Twitter and in email)
Soniccharge: Magnus has been busy with Teenage Engineering and other projects but will eventually make it back to Reason (email)
Speo: Talented YouTube/Reason user has released his first Rack Extension "Frame CV" and is planning updates (YouTube Video Comments)
Static Cling: Mr Alfronso has stated he is going to update his devices and work on some new cool ones this year (Rack Extensionists group reply)
Studio Corback: has updated "Mixfood Ambi Nature Ambience Creator" Re recently
Synapse Audio: Released "The Legend"
SyntheTechSound: Developing "Spectra" ( Reasontalk Thread all about it)
Tone 2: looking at SDK (I do sound design for Tone 2)
Turn2On: released Dyingstar
Uberwave: Uberwave have said they plan to update their Res with new GUIs and start on a new one for this year (Via Email)
Unfiltered Audio: recently release "Sunder" and they plan on updating existing devices with new GUIs. They also talked about Dent and Indent Res (Facebook post in Rack Extensionists)
Vibe Planet: Personal Life and taking time in between, He has plans for Compressors, EQs, Noise makers, Synths. (Email)
Zvork: working on new Re with SDK 2.5 ( Email)
(Unknown/Quiet)
Aftermath Audio: ?
Amaloo Audio: ?
BasementDSP: ?
Cakewalk: ?
IOX Audioware: ?
Josh Levy: ?
Korg: ?
Little IO: ?
Numerical Sound: ?
Ochen K: ?
Retouch Control: ?
Sononics: Sold to Audireo and Bob now works at Cakewalk (Facebook, Email)
Soundiron: ?
Spectralscan: ?
Sputnik Audio: ?
Sugarbytes: ?
ThatMusicCompany: Recently update Phaser Re but are reaming on this list until a new Re arrives.
TheChronologists: ?
TheMusicologygroup: ?
Uberwave: formly know as "Code Diggers" Their site is going through construction which I find a bit odd.
Zakura Pod: ?
(Former/Retired)
Fxpansion: said they have no plans for further Rack Extesnion development. That its on the back burner! (Email)
Izotope: Limited in resources such as time and money and want to make a focus on their VST/AU stuff (Email)
ProjectSam: Tested the waters and seemed not intrigued with sales (They haven't answer my message, so this pretty much confirms this)
U He: They are focusing on VST/AU development and have bigger projects, They want to make a come back but probably won't due to resources and issues (Email, various research)
(Considering Development)
8dio: Troels seems interested in the IDT part of Rack Extensions and is considering stuff like their Adagio series (Email)
Soundtoys: considering development but they are going to hire some more coders before they do (Email)
Xfer Records: Steve Duda and me had a good talk this morning, I told him why Reason should have Serum as a rack extension along with the rest of his catalog, He said he don't want Serum being limited and I told him about the new SDK 2.5, He suddenly was intrigued by reading the possibilities on the page and downloaded the kit. He said he'll be studying and looking at it tomorrow. He also replied and said we will be satisfied someday and that he don't have any info nor a timeline to give. (Email)
The question is - Who cares 
) but this is huge news if true.
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