When will my device get the Android 4.0 update (Ice Cream Sandwich)? Android 4.0 (Ice Cream Sandwich) was officially announced on October 19, 2011.

(You can review the high level SDK changes in Android 4.0 or the official changelog at the official Android Developer's site.)

Of course, not all devices will get this update right away and others won't get it at all. Each manufacturer and carrier often choose to add their custom modifications which tend to delay the official release.

When will each device get Android 4.0, either officially or unofficially, if ever?

See also:


When will my tablet get the Android 3.x update (Honeycomb)?
When will my device get the Android 4.1 update (Jelly Bean)?
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


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

Google Nexus ONE


Official: never (confirmed)
Unofficial: Oct 2011 (alpha)


Google Nexus S


Official: 

GSM - T-Mobile (GT-I9020): Soon (rumored)
GSM - AT&amp;T (GT-I9020A): Soon (rumored)
CDMA - SPH-D720: April 2012 (confirmed)



HTC Amaze 4G


Official: May-June (confirmed), June 16th 2012 (unconfirmed) 


HTC Desire


Official: never (confirmed)
Unofficial: November 2011 (beta)


HTC Desire HD


Official: never (confirmed)


HTC Desire S


Official: By the end of August 2012 (confirmed)


HTC DROID Incredible 2


Official: To be determined (by the end of August) (confirmed)


HTC DROID Incredible S


GSM (international)

Official: 2012-July-2 (confirmed)

Verizon

Unknown



HTC EVO 3D


Official: Early August 2012 (confirmed)


HTC EVO 4G+


Official: May-June (confirmed)


HTC EVO Design 4G


Official: 1 August 2012 (confirmed)


HTC Incredible S


Official: June-July (confirmed)


HTC Raider


Official: TBC (confirmed)


HTC Rezound


Official: August 2012 (confirmed)


HTC Rhyme


Official: June-July 2012 (confirmed)


HTC Sensation


Official: March-June (confirmed)


HTC Sensation 4G


Official: March-June (confirmed)


HTC Sensation XE


Official: March-June (confirmed)


HTC Sensation XL


Official: April-Jun (confirmed)


HTC Thunderbolt


Official: 31-Jan-2013 (confirmed)


HTC Velocity 4G


Official: March-June (confirmed)


HTC Vivid


Official: March-June (confirmed)


Huawei Honor U8860


Official: 12 January 2011 (confirmed)


LG Optimus 2X


Official: 2012 (confirmed)


LG Optimus 3D


Official: 2012 (confirmed)


LG Optimus Black


Official: 2012 (confirmed)


LG Optimus LTE


Official: 2012 (confirmed)


LG Prada 3.0


Official

Germany and Italy: 4-July-2012 (confirmed)



Motorola Atrix 2


Official Q3 2012 (confirmed)


Motorola Atrix 4G


USA (MB860) Official Q3 2012 (confirmed)
AsiaPac/EMEA/LatAm (MB860/MB861/ME860) Official: (TBA)


Motorola DROID 3


Official: never (confirmed)


Motorola DROID 4


Official: 2012 August 14 (phased update) (confirmed)


Motorola DROID Bionic


Official: Early Q3 2012 (confirmed)


Motorola Droid RAZR


Official: 2012-06-21 (confirmed)


Motorola Droid RAZR Maxx


Official: 2012-06-21 (confirmed)


Motorola Photon 4G


USA Official: Q4 2012 (confirmed)
Japan Official: TBA


Samsung Captivate Glide


Official: 7 Sep 2012 (confirmed)


Samsung Galaxy Note


Official: March 2012 (rumor)


AT&amp;T: July 2012 (confirmed)
T-Mobile: August 2012 (at launch) (confirmed)



Samsung Galaxy S


Official: never (confirmed (1), confirmed (2), confirmed (3)) but Android 2.3-based firmware upgrade to give some ICS-like features


Samsung Galaxy S Advance (GT-I9070)


Official: unknown (Techzek, Slashgear, Samsung Forum)


Samsung Galaxy S 2


Official: March 2012 (rumor)

T-Mobile: May 14th (unconfirmed)



Samsung Epic 4G Touch


Official: August 2012 (confirmed)


Skyrocket


Official: July 2012 (confirmed)


Sony Ericsson Live with Walkman™


Official: TBA (confirmed)


Sony Ericsson Xperia active


Official: TBA (confirmed)


Sony Ericsson Xperia arc and Xperia arc S


Official: March - May 2012 (confirmed)


Sony Ericsson Xperia mini and Xperia mini pro


Official: June 2012 (confirmed)


Sony Ericsson Xperia neo and Xperia neo V


Official: TBA (confirmed)


Sony Ericsson Xperia PLAY


Official: TBA (confirmed)


Sony Ericsson Xperia pro


Official: TBA (confirmed)


Sony Ericsson Xperia ray


Official: TBA (confirmed)


Sony Xperia P


Official: 17-August-2012 (confirmed-official)


Sony Xperia S


Official:

Three: 29-June-2012 (confirmed)



Tablets

Acer Iconia Tab series


Official: April 27, 2012 (confirmed)


Archos G9


Official: Early Feb 2012 (official)


ASUS Eee Pad Transformer


Official: Feb 23rd (Feb 24th for North America) (official)


ASUS Transformer Prime


Official: January 2012 (rumour)


HTC Flyer


Official: Q1 2012 (rumour)


Lenovo Thinkpad Tablet


Official: May 2012 (offical source)

U.S.: 1-July-2012 (confirmed)



Lenovo Ideapad K1


Official: June 15 2012 (working date) download (not OTA update) (source)


Motorola XOOM


Official:

US Wifi models - Mid Jan 2012  (confirmed)
non-US Wifi models - Q2 2012 (confirmed)

UK: August 2012 (confirmed)

US 3G models - Q2 2012 (confirmed)
non-US 3G models - (TBC)

UK: August 2012 (confirmed)


Unofficial: 

US 3G/LTE models (CyanogenMod "Kang", Team Eos)



Motorola XOOM Family Edition


Official: Q3 2012 (confirmed)


Motorola XOOM 2


Official: Q3 2012 (confirmed)


Motorola XOOM 2 Media Edition


Official: Q3 2012 (confirmed)


Motorola XYBOARD 8.2


Official: Q3 2012 (confirmed)


Motorola XYBOARD 10.1


Official: Q3 2012 (confirmed)


Samsung Galaxy Tab Plus 7.0


Official: 3 August 2012 (confirmed)

Austria: July 2012 (confirmed)



Samsung Galaxy Tab 7.7


Official: 4-July-2012 (confirmed)


Samsung Galaxy Tab 8.9


Official: August 2012 (official)


Samsung Galaxy Tab 10.1


Official: August 2012 (official)


Toshiba Thrive


Official: 3Q 2012 (confirmed)