the official 4.0.3 rom is available in Europe in XEO and SEB versions, for other countries like UK, it will be available around 19 March

they twitted a msg "#ICS for #GALAXYSII will be available today in Europe including Poland, Hungary, Sweden, & Korea, & gradually roll out to other markets." on 13 March morning



base: I9100OXALPQ
modem: I9100XXLPQ
csc: XXLPQ (XEO)/ XXLPD (SEB)
build-date: 8 March 2012


note that a wipe may be required for upgrading

some download links found on the internet:
XEO link1
XEO link2 part1, XEO link2 part2
XEO link3 (CF-Root)
SEB link1
SEB link2
SEB link3
torrents:
XEO
SEB