Everything there is to know about Flex 4 / Gumbo
About a month ago, the Flex team announced that nightly builds of the next version of Flex (code named Gumbo) were now available on the opensource Flex site. Along with early versions of the SDK, the team also posted a ton of other information, including specs and API docs.
Below is a listing of links and resources about Gumbo / Flex 4. Going through these will quickly get your up to speed on what is being worked on in Flex 4, and get your ready for playing around with the new builds.
Official opensource project page
http://opensource.adobe.com/wiki/display/flexsdk/Gumbo
Flex 4 Downloads
http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+4
Gumbo Themes
http://opensource.adobe.com/wiki/display/flexsdk/Gumbo+Themes
An Introduction to the Gumbo Component Architecture
http://opensource.adobe.com/wiki/display/flexsdk/Gumbo+Component+Architecture
Flex 4 Language / API Reference
http://livedocs.adobe.com/flex/gumbo/langref/
Videos
The Next Dimension of Rich Experiences (360 Flex Keynote) Mark Anders
http://link.brightcove.com/services/link/bcpid1753161885/bctid1741161343
Flex SDK Next Plan (Matt Chotin)
http://flexorg.wip3.adobe.com/gumbo/gumboplan.htm
Flex 4 Skinning Architechture : Deepa Subramaniam
http://bit.ly/46xv4V
Designer / Developer Workflow in Flex 4 (Ely Greenfield)
http://bit.ly/zM2h2
Feature Specifications
- FXG 1.0 (Graphic Interchange Format)
- Skinning and Skinnable Components
- Enchanced States Syntax
- Group Containter
- Items Component and Selector
- Layout Interface
- Application Component
- Text Primitives
- TextInput Component
- TextArea Component
- ScrollBar Component
- Range Class
- Track Base Class
- Slider Component
- Spinner Component
- Numeric Stepper Component
- MXML 2009
Podcast : The Future of Flex : Matt Chotin on the Flex Show
http://www.theflexshow.com/blog/index.cfm/2008/7/30/The-Flex-Show–Episode-49-The-Future-of-Flex-with-Matt-Chotin
More Resources
Flex Developer Forums
http://www.adobeforums.com/webx/.3c060f85/
Flex Team Blog
http://blogs.adobe.com/flex/
Sean Moore also has a good link round up on his blog.
If you have any more resources or links, post them in the comments.






Dude, thanks for compiling this … I finally get some time to start looking at Gumbo and you do most of the hard work for me! I owe you a pint of frothy London-town ale.
Lee Probert
27 Aug 08 at 11:26 am
I have been posting various Gumbo examples as well.
Mine can be seen at http://blog.smartlogicsolutions.com/category/flex-4/
Sherif Abdou is another person I see making Gumbo examples: http://sherifabdou.com/
Greg J
27 Aug 08 at 11:28 am
[...] but I felt it necessary in this case. Mike Chambers has compiled a ton of useful information on Flex 4/Gumbo. It’s definitely worth checking out. He’s got links to the Flex 4 specs, architecture docs, API, [...]
Koen.cz » LOTS of Flex 4/Gumbo Information
27 Aug 08 at 7:23 pm
[...] http://www.mikechambers.com/blog/2008/08/27/everything-there-is-to-know-about-flex-4-gumbo/ [...]
LOTS of Flex 4/Gumbo Information « RIAdobe
27 Aug 08 at 8:04 pm
[...] Mike Chambers opublikowa? post, w którym zawar? mas? linków do zasobów traktuj?cych o Flex 4. Na li?cie znalaz?y si? [...]
Polish Adobe Flex User Group » Blog Archive » Zasoby Flex 4/Gumbo
28 Aug 08 at 12:58 am
[...] Mike Chambers opublikowa? post, w którym zawar? mas? linków do zasobów traktuj?cych o Flex 4. Na li?cie znalaz?y si? [...]
Polish Adobe Flex User Group » Blog Archive » Zasoby Flex 4/Gumbo
28 Aug 08 at 12:58 am
[...] good collection of links helping you to understand and get the most out of the new and upcoming version of Flex. Spread [...]
Everything there is to know about Flex 4 | Good Times & Happy Days
28 Aug 08 at 2:18 am
[...] Chambers a dressé une compilation des différentes ressources et Video sur Flex [...]
vhe74′Stuff » Archive du blog » Flex 4
28 Aug 08 at 4:44 am
[...] I mentioned the other day, the Flex team has released a ton of information on Flex 4. One of the new features which I am most [...]
Mike Chambers » Blog Archive » Getting started with Flex 4 FXG and Flex Builder 3
28 Aug 08 at 3:00 pm
[...] http://www.mikechambers.com/blog/2008/08/27/everything-there-is-to-know-about-flex-4-gumbo/ August 29, 2008 | In General chit-chat | No Comments [...]
Everything there is to know about Flex 4 (’Gumbo’) | Psyked
29 Aug 08 at 2:01 am
[...] Everything there is to know about Flex 4 / Gumbo [...]
???????? ?? Flash Player 9 / Flex 4 Gumbo | NeXt
29 Aug 08 at 3:02 am
[...] Below is a simple example (which requires Flash Player 10 RC), followed the code, that shows data-binding with FXG and Flex 4: [...]
Mike Chambers » Blog Archive » Data Binding with FXG in Flex 4
29 Aug 08 at 1:00 pm
[...] Mike Chambers » Blog Archive » Everything there is to know about Flex 4 / Gumbo (tags: flash as3 flex gumbo adobe video) [...]
links for 2008-08-29 | NeXt
29 Aug 08 at 2:40 pm
[...] Read more [...]
Flash Article | Flex 4 roundup | Lemlinh.com
31 Aug 08 at 8:08 pm
[...] it in the Flex Builder 3.0 and start doing stuff. Here you have all the possible information in a blog post by Mike Chambers. Read [...]
Everything you want to know about Flex 4 / Gumbo | The Flashchemist
1 Sep 08 at 8:35 pm
[...] saiba_tudo_sobre_o_Flex4 [...]
Saiba tudo sobre o Flex 4 « Norberto Tsoulefski Weblog
8 Sep 08 at 9:48 pm
[...] speaking about some of the current and future stuff going on around the Flash Platform, including Flex 4, Flash Player 10, Adobe AIR 1.5, Thermo, and more. I dont have all of the links to the events just [...]
Mini Speaking Tour in Asia (Tokyo, Seoul, Tapei and Hong Kong) at Mike Chambers
11 Sep 08 at 2:56 pm
[...] http://www.mikechambers.com/blog/2008/08/27/everything-there-is-to-know-about-flex-4-gumbo/ [...]
Gumbo-Flex 4 « Sharp Mind
12 Sep 08 at 4:20 am
Thanks for the wonderful artical~
By the way, anybody know what’s the below means?
“To ensure a project retains any merged manifests for a namespace, an application-level configuration file can be used.
app-config.xml
…
…
http://ns.adobe.com/mxml/2009
mxml-2009-manifest.xml
gumbo-manifest.xml
…
”
I know I must use the app-config.xml, but where and how to use it?
Thanks in advance!
Email:shineandsky@gmail.com
mani.
mani
22 Sep 08 at 7:10 am
[...] Gumbo – Flex SDK – Confluence Gumbo link roundup at mike chambers [...]
Andy Hulstkamp: Gumbo (Flex 4) plays generated sounds in Style
25 Sep 08 at 4:37 am
[...] Silverlight 3 - When? Scott blogs about Silverlight 2 (now installed on 100 million consumer machines – will it match the Flash install numbers?) and Silverlight 3. Let hope we don’t have to wait 12mths for Silverlight 3 otherwise Microsoft will be chasing Flex 4. [...]
Silverlight 3 - When? « Tales from a Trading Desk
17 Nov 08 at 10:09 pm
[...] without a doublt flex apps GUMBO are the future, especially with the soon to be released Flex 4 which boasts support for creating [...]
Nathan’s Blog » Blog Archive » low level design considerations
12 Dec 08 at 9:27 pm
[...] have a number of experts on hand to demo and discuss Flash Catalyst (formerly known as Thermo) and Flex Builder 4. All new, shiny, exciting [...]
PokerCoder blog
14 Jan 09 at 4:33 pm
Deepa Subramaniam’s video is outstanding when thinking of showcasing smth. :) what i’ve managed to understand, is that in case you are building smth. on Gumbo you should avoid Matt and Ely in first place. :)
Have fun. Adobe rocks.
Nelu Tarna
18 Jan 09 at 3:26 am
Mike! I’m getting a Page not found error for the link to Ely’s video on Designer / Developer Workflow…
Jeethu Karthik
29 Apr 09 at 1:20 am
[...] next version of Flex Builder (V4, code named Gumbo) has been renamed Flash [...]
Farewell Flex Builder, Hello Flash Builder | actionscripter.co.uk
16 May 09 at 1:49 pm
*Video Not Found*
The Next Dimension of Rich Experiences (360 Flex Keynote) Mark Anders
http://link.brightcove.com/services/link/bcpid1753161885/bctid1741161343
Video Not Found
The video you are trying to watch is no longer available.
Ben L
18 Nov 09 at 2:30 pm