Kudos: Min spec actually works...
Posting off a live session on a Thinkpad T60 with mem=2048M. This is a 64bit capable core-duo machine dating from 2006. Bearing in mind that this machine uses integrated graphics so the system only sees 1968 or so Mb, and that this is a live session with no swap so there must be some squashfs like overhead, I'm quite impressed.
Wifi (intel) works, firefox/youtube HD video playback (Gil Scott-Heron's I'm New Here) reasonably smooth on around 50% processor.
I could not find any keyboard layout selection when booting the live image, so it was en-us layout to start with. (Just because I could not find a keyboard setting on the boot up screen doesn't mean there isn't one, strikes me as an important thing to provide).
I had to install a language pack from inside the live session for en-gb and had to change the keyboard layout by adding en-gb. Both of those tasks could be achieved from the graphical settings menu.
Like Ubuntu live images back in the day, Libreoffice spell check won't work in English (UK) until you install the hunspell-en-gb package. Then it works.
The 2.6Gb live image includes something like 260Mb of wallpapers and three sets of themes.
Rather impressive for a beta. Running at 1645M now with 71M free and 321M 'available'.