Where can you find the backorder date?  Mine is on the UK site though which I simply cannot spot an ETA.  I did however get a series of emails pushing it back from March to April, then another to May.

Two things that might be of use.  Firstly, you must log in to the same site that you ordered through.  For me, I can only log in to http://uk.farnell.com rather than the Element14 site.  Secondly, I've found that I log in with a username, not an email.