I need some people to test it too as I don't have Arc.
It'll be system.img flashable via fastboot. So, ANYONE?
Of course that you need unlocked bootloader because there's no other way of flashing system.img file except fastboot!
Note: be prepared to most probably lose all data to ensure that CM7 will run on clean system (to avoid any additional bugs).
If CM7 system.img ever bricks your phone, simply connect it to the fastboot and flash Bin4ry's rooted system.img (easiest way), or reflash with FlashTool.
Some kind of global EULA. Breaking these terms will reflect as stopping releasing progress to the public on some time.
*Do not remind me about posting my progress. I know that I have to post progress when there will be any, I'm not stupid.
*Do NOT ask me to switch to 2.3.4 CM7 because there are only nightly builds for a few devices.
*Do NOT mirror my files once they appear. Reasons:
1) With no mirrors I can keep track of download counter.
2) With no mirrors I ensure that all people download latest release, not some outdated file from mirror.
3) Mediafire is FREE and it has NO DOWNLOAD WAITING.
Everything I publish will be in this Mediafire folder. Again, don't mirror.
Update - 16th May: I have plans to make a custom kernel too. Wait for further info
Update - June 2011: Jerpelea has taken over CM7 development for Arc. FreeXperia project expanded to Xperia Arc and Play. Play will be maintained by me. Arc project closed - thread closed.