The Arc comes with the same bootloader Xperia X10 does so say goodbye on your hopes modding the firmware.
The Arc are for people who doesn't mind being stuck with the same Android version for a long time or doesn't care of any android updates at all (Believe me those people exists!). The Exmor R and Mobile Bravia Engine are very good additions on the Arc, though as for the video reviews, it still does not match the Super AMOLED (Samsung) or the Clear Black Display (Nokia) of other phone brands.
The specs are also no that good compared on other flagship phones.
- HTC Desire HD has 768 MB of RAM
- Samsung Galaxy S has the 1 GHz Hummingbird Proc and Super AMOLED Display
- LG have a new phone featuring a dual core processor
- Its the dawn of dual core phones.
Think twice before buying this phone. If you're fine being stuck with Gingerbread and loves taking pictures (SE has the best camera for phones) and watching movies (I think this is the essence of the Mobile Bravia Engine) then this is the best phone for you.
Please be reminded that SE didn't force you to buy this phone so don't start another WORLD WAR when SE announced its early End Of Life.