This community wiki will list all of the known and rumored dates for devices. If you have an update make sure to follow the format that's been established, and the following guidelines:
- Keep phones in alphabetical order listing the manufacturer and model
- Specify if the date is confirmed or rumored and link to the source
- If there is an unofficial release, link to the site where it can be downloaded
- If a new update comes out (e.g. 2.3.5 over 2.3.4), link to the new and don't keep the old information
Note that devices that do not meet Google's Compatibility Definition will not receive a Google-sanctioned update. In the case of the major manufacturers and many others, that means they won't release an update at all since Google's certification is important to their business.
Phones
Commtiva z71
Geeksphone One
Geeksphone Zero
Google Nexus One
HTC Aria
HTC Desire
HTC Desire HD
HTC Desire Z / G2
HTC Droid Incredible
HTC Droid Incredible 2
HTC Droid Incredible S
HTC EVO 4G
HTC EVO Shift 4G
HTC Hero
HTC Inspire 4G
HTC Legend
HTC myTouch 3G Slide
HTC myTouch 4G
HTC Tattoo / Click
HTC Thunderbolt
HTC Wildfire / Buzz
Official: Never. (Official mail from HTC support; cause: doesn't meet the minimum requirements, e.g., 1 GHz processor)
Unofficial 2.3.7: 11th October 2011. (CyanogenMod 7.1)
Huawei U8220
LG Optimus 2X / G2X:
LG Optimus 3D
LG Optimus One P500
LG Revolution
Motorola Atrix 4G MB860
Motorola Backflip / Motus MB300
Motorola Cliq MB200
Motorola Cliq XT MB501
Motorola Defy MB525
Motorola Droid A855
Motorola Droid 2 A955
Motorola Droid X MB810
Motorola Milestone X
Samsung Droid Charge
Samsung Galaxy Ace / Gio / Fit / Mini
Samsung Galaxy S
1. Canada Bell Vibrant GT-i9000M
2. Canada Telus Fascinate 3G+ SGH-T959D
3. International GT-i9000
4. US AT&T Captivate SGH-i897
5. US Sprint Epic 4G
6. US T-Mobile Vibrant SGH-T959
7. US Verizon Fascinate / US Cellular Mezmerize / C Spire Wireless Showcase SCH-i500
Samsung Infuse 4G
Sony Ericsson Xperia Arc
- Official (2.3.4): 18 October 2011 (Confirmed)
Sony Ericsson Xperia X8
Sony Ericsson Xperia X10
ZTE Blade / Orange San Francisco / Dell XCD35
ZTE V9
Tablets
Barnes & Noble Nook Color
Samsung Galaxy Tab
This is not specific to Gingerbread, but this forum posts lists the rough dates for all Android versions for all Motorola models: https://supportforums.motorola.com/community/manager/softwareupgrades