Tried the new image and after a bit of a mess (installation apparently stuck, turned the Pi off and on again, re-installation that triggered two or three reboots), it goes to the login screen but the system can't find the network connection. During boot, it complains that it can't find eth0 and indeed, after login, ifconfig doesn't show it; only the loopback interface. The /etc/network/interfaces file seems ok.
Note that during boot, I have a message saying something like "eth1 copied from eth0", not sure if it's relevant as there isn't an eth1 either in interfaces or reported by ifconfig.
EDIT: I have a bit of a doubt: is it a new "beta" image? Is it a new version that happened to be released yesterday and wasn't as a reply to my issues at all?
EDIT 2: maybe the eth0 interface missing is a consequence of switching from bind9 to dnsmasq?