Android 2.2 (FroYo, short for "Frozen Yogurt") was released over the Summer 2010, however not all of the devices that will get this update have received it yet. Each manufacturer and carrier needs to add their custom modifications before it can be officially released.

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:

1. Keep phones in alphabetical order listing the manufacturer and model
2. Specify if the date is confirmed or rumored and link to the source
3. If there is an unofficial release, link to the site where it can be downloaded

If you don't have a high enough reputation score to edit the wiki (currently 100), leave your suggestion in a comment or answer and someone will update the list.

Phones

Acer Liquid E

• Official: Nov. 19, 2010 (confirmed)

HTC Desire

• OTA: (Virgin Media) Nov. 11, 2010 (confirmed)
• UK: (via HTC) Sep. 18, 2010 (confirmed)

HTC G1

• OTA: Never
• Unofficial: (myTouch 3G port)

HTC Legend

• OTA: (Europe/Vodafone) Nov. 15, 2010 (confirmed)

HTC myTouch 3G Slide

• OTA: planned, no date (confirmed)

HTC Wildfire

• OTA: Unknown

Motorola Defy

• Europe, Asia, Middle East: 2Q 2011 (source)

Motorola Milestone

• Europe, Asia, Middle East: 4Q 2010 - initial rollout (source)
• Asia-Pacific, Canada, Latin America: 1Q 2011 (source)

Samsung Captivate

• OTA: (Canada) mid-December 2010 (confirmed)

Samsung Fascinate

• OTA: (Canada) early 2011 (confirmed)

Samsung Galaxy 3 (I5800 / I5801)

• Official some time in November/December 2010 (source)

Samsung Galaxy 5 (I5500)

• Official some time in November/December 2010 (source)

Samsung Galaxy A (Korea)

• OTA: Nov. 15, 2010 (confirmed)

Samsung Galaxy S (International)

• Official:
  • T-Mobile: 2nd week of Dec. 2010 (tentative) (source)
  • Europe: (O2) Nov. 15, 2010 (confirmed), (Vodafone) Nov. 15, 2010 (confirmed)
  • Korea: Nov. 15, 2010 (confirmed)
  • Middle East: Nov. 15, 2010
  • UK: (via Samsung Kies) Nov. 4, 2010 (confirmed)

Samsung Moment

• OTA: Never (confirmed by Sprint)
• Unofficial:

Samsung Vibrant

• OTA: (Canada) mid-December 2010 (confirmed)
• Unofficial: Nov. 9, 2010 (confirmed)

Sprint Epic 4G

• OTA: unknown
• Unofficial: Nov. 7, 2010 (confirmed)

Tablets

Archos 28/32/43/70/101

• Official: Nov. 30, 2010 (confirmed)

Dell Streak

• Official:
  • unbranded/unlocked: Nov. 15, 2010 (confirmed)
  • AT&T: Dec, 1, 2010 (confirmed)

ViewSonic ViewPad 10

• Unofficial: Nov. 12, 2010 (source)

This is not specific to Froyo, but this forum posts lists the rough dates for all Android versions for all Motorola models https://supportforums.motorola.com/community/manager/softwareupgrades