Unofficial CM10 Port for the Samsung Galaxy S Plus

 XDA Senior Member Doomsday94 has released an unofficial preview build of CyanogenMod 10.
The build is a little shaky, which is why it is called a preview.

CyanogenMod is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. Linked below is a package that has come from another Android project that restore the Google parts. CyanogenMod does still include various hardware-specific code, which is also slowly being open-sourced anyway.
All the source code for CyanogenMod is available in the CyanogenMod Github repo. And if you would like to contribute to CyanogenMod, please visit out Gerrit Code Review.

Preview: https://docs.google.com/file/d/0B-NP...Z0k/edit?pli=1
Google Apps: http://goo.im/gapps

First time flashing CM10 to your Galaxy S Plus (or coming from another ROM)?

1. Root your device and install ClockworkMod Recovery.
2. Reboot into Recovery using 2-button-combo
3. Do a Nandroid backup!
4. WIPE (wipe data/factory reset + wipe cache partition)
5. Install the ROM from internal sdcard using ClockworkMod Recovery
6. Optionally install the Google Addon

Upgrading from CM7/CM9?

1. Do a Nandroid Backup!
2. WIPE (wipe data/factory reset + wipe cache partition)
3. Install the ROM from internal sdcard using ClockworkMod Recovery
4. Optionally install the Google Addon

Upgrading from another CM10 Build?

1. Do a Nandroid Backup!
2. Install the ROM from internal sdcard using ClockworkMod Recovery
3. Optionally install the Google Addon

Note: Nandroids of CM7, CM9 and CM10 are incompatible due to partition layout changes. Please be on the correct version before restoring Nandroids.

What Works:

Audio
Video (sometimes youtube crashes)
Receiving and making calls
Proximity sensor
Wifi
Bluetooth
USB mass storage
HW accelerated gui
HW accelerated video
60% project butter

Not Working:

headset audio
camera
full butter experience
many other things

As you can expect, this is definitely not daily driver material just yet. However, it provides Galaxy S Plus users with a base from which to proceed and a known number of bugs to squash. It may not be long until there is a more stable version for users to flash.

For more information, check out the original thread.