Even if as I wrote these lines the official site is not yet updated,
it seems the final version is already spreading among several french news websites (Clubic, WinampFR, Touslesdrivers ...) I have no clue what changed yet.

Edit1: Deleted Bad Links See Below For Better Links
(Bidz & Amano links=14Dec Build but WaldoMonster link=12Dec Build)

Edit2: Beware the register poping up window might leave you with a very strange feeling

No it is NOT the final FINAL! The latest "Final" available to the Beta testers was compiled on 14th of Dec. The sprading "Final" was compiled on 12th of Dec.

Is this the final version?
http://download.nullsoft.com/winamp/client...namp50_full.exe

[version history]
Winamp 5.0:
* Support for classic Winamp 1.x/2.x/2.9x skins and Winamp 3 ("Modern") skins
* Fancy new modern skin:
- Integrated video, AVS, and Milkdrop support
- Many built-in colorthemes
* Same ol' classic skin for people who want the Winamp 2 feel
* Vastly more powerful media library:
- Automatic background directory scanning options
- Customizable views and columns, graphical view editor
- Internet Radio (SHOUTcast) and TV listings
- Context-sensitive item info viewer
* CD ripping support (AAC@2x in free version, MP3 at unlimited speeds in pro)
* CD burning support (limited to 2x in free version)
* Advanced title formatting logic for file types that support it
* Huge AVS updates:
- New effects, bundled some popular 3rd party APEs
- A much better selection of default presets
- Experimental SMP support
- Full AVS preset subdirectory support
- Extensions and optimizations to the AVS evaluation library
* Support for playback of AAC and VP6 in NSV files/streams
* Global hotkey support
* Options to disable plugin exception handling for developers
* A ton of new plug-in API calls (SDK forthcoming)
* fixed changing-systray options while minimized bug
* new Winamp icon
* added XP Manifest.xml to winamp.exe
* made agent icon use configured winamp system tray icon
* optimized winamp's load titles on demand logic, made faster
* made winamp's internal submenu management more reliable
* added skin font override preferences
* added spacebar shows current playlist item in playlist editor
* fixed manual playlist advance w/ repeat
* made winamp's open directory recurse checkbox nicer looking
* big prefs overhaul to make steve happy
* huge thanks to Amir Szekely and the rest of the NSIS developers
for their help
[/version history]

If the "About" screen says Dec 12, it's out of date/not the official final.
It should say Dec 14.

http://download.nullsoft.com/winamp/client...inamp50_pro.exe

That one has build-date: 14th December (install .exe is also 0.2mb bigger than the other one with build date 12th December).

It asks for registration info upon first application start. Press Cancel, and it it doesn't ask for it again, and it functions as a "normal" version.

yup.

On betanews is the dec 14th build!

http://fileforum.betanews.com/detail.php3?...?fid=1066336873

Is it just me, or are all these links now broken?

Bidz's link is now broken here too but the Amano's link is still working.

If you really can't dl it try this link, it's one of the french links I deleted as it was linked to the 12Dec Build but the site updated the link to the 14Dec build so it should be the good version now:

http://www.clubic.com/n/n10917.html

Can you install this and keep v2.xx installed too?

Why would you want to? You can use the classic skin and it'll be exactly the same as 2.xx just with added er, cool stuff.

According to the guys at Winamp Forums, the real final version is the one compiled on Dec 14th. So check "Nullsoft Winamp..." on Winamp to see which date it was compiled. The Nullsoft Installer for the final version was compiled on Dec 16th by 12AM.

They said some people downloaded a "final" version from their official website compiled on Dec 12th. There has been some final ajustments (I don't know which) from these two builds.