[unrequited]

I think this forum should have a sticky for version changelogs (official, and what's been found through source-combing)... In case this ends up being the changelog thread, I don't mind updating it as more info's released, here we go.

2.3.3 (431100003):

Originally Posted by ireaderreview.com

from http://ireaderreview.com/2010/02/13/...-update-2-3-3/
At the Kindle Forum there are varying reports on what improvements and fixes there are (remember this is all guess-work and not official) -
Fixes for the Kindle DX.
Faster deletes.
Faster going in and out of sleep mode.
More precise moves of the 5-way cursor.
3 separate people find the font is Darker

2.3 (unknown build #):

Originally Posted by Amazon support website

-Longer battery life for Kindle (Global Wireless): You can now read for up to 1 week on a single charge with wireless on. Turn wireless off and read for up to 2 weeks.
-Built-in PDF reader: Your Kindle can now display PDF documents without losing the formatting of the original file. Send PDF documents directly to your Kindle (via your @Kindle address) or drag and drop PDF files from your computer to your Kindle (when connected via USB). Learn more.
-Manual screen rotation: The Kindle screen can now manually rotate between portrait and landscape views so you can see the entire width of a web page or magnify the page of a PDF file. The page-turn buttons work the same in either orientation, and the 5-way controller movements are switched to match the orientation. Learn more.
-Option to convert PDF files to Kindle format. If you prefer to have your personal PDF documents converted to the Kindle format (so that they can reflow), type "Convert" in the subject of the e-mail when you submit your personal document to your @kindle.com address.

2.0.3 (327610024):
https://www.mobileread.com/forums/sho...9&postcount=10

Originally Posted by Damætas

unrequited, I've confirmed that 2.0.3 recognizes the new TTS-disable flag in books sold on Amazon's site that are TTS-disabled. TTS blocking does not work on 2.0.2 or earlier.

http://www.kindleboards.com/index.php/topic,7303.0/

Originally Posted by muggle

Since I updated my Kindle 2 with the 2.0.3 patch, I tried it again and it seems much much faster.

Originally Posted by Raffeer

Wow!! Much faster!

note: others like myself have noticed no speed increases, but it may be on a website-by-website basis

https://www.mobileread.com/forums/showthread.php?t=45528

Originally Posted by hmemcpy

Last night I upgraded my K2 to 2.0.3, and now I can't turn on USB networking. I get to debug mode just fine (typing `help shows all the commands, including `usbNetwork and `usbQa), however typing those seems to do nothing.

2.0.2 (309510017):
https://www.mobileread.com/forums/sho...296#post397296

Originally Posted by mshnryman

INSTALLED AND TESTED
Works w/ Kindlefixed files.
Also installed the Kindle2 screensaver hack ( https://www.mobileread.com/forums/sho...345#post380345 ) and it worked also.

NOTE: make sure to backup your documents folder (and any other necessary data you may have) before making the update. If I hadn't made the backup, I may have lost data and had to find it all again. Kindle 2.0.2 update would NOT install until I ran "Update_kindle2_restore_default_screen_savers. bin" and after I ran it, the USB connectivity would not work correctly. "I Reset to Factory Defaults" to get it back to a working 2.0.1 and then updated to 2.0.2

note: a lot of other people are just unhacking, updating, and hacking again without issue, but backups are always a good idea whenever performing an update.

http://www.kindleboards.com/index.ph...html#msg116077

Originally Posted by unrequited

Just updated, and the UI definitely is faster. Page refreshes are faster. I can confirm at least one bugfix as well. When reading manga/comics (or viewing images in the pictures folder) "Partial Refresh" finally works. Whenever you turn the page, it blanks the screen, refreshes the top half of the page first, and then refreshes the bottom half of the screen so if you're reading comics/manga you can change pages even quicker.

https://www.mobileread.com/forums/sho...814#post397814

Originally Posted by ghchinoy

Looking at the published gnu linux kernel sources provided by Amazon, only 4 files are different:

arch/arm/mach-mx3/dvfs_v2.c
arch/arm/plat-mxc/isp1504xc.c
arch/arm/plat-mxc/wdog.c
sound/arm/mxc-alsa-pmic.c

These are the kernel (2.6.22) mods from the last Kindle version, 2.0.1 (303870012).

Until Amazon posts release notes, we won't really know what was different in the functioning of the Kindle software, but the kernel changes look like adding in a counter to reboot (6 times) and setting the minimal soundchannels to 2.

2.0.1 (303870012):
https://www.mobileread.com/forums/member.php?u=1182

Originally Posted by TadW

- the power management routines of the i.MX31 CPU and MC13783 PMIC
- the battery charger routines
- the broadsheet watchdog timer
- the eInk frame buffer device

v2.0 (291330095):
Initial release