Just FYI for anyone who may have spotted the X5 presale (for US) from Adorama.com - I emailed them a few days ago for any ETA info and just heard back today: they have no info and will not be releasing any info, including your place in line. They don't know when they're receiving them or how many. Maybe this is true for all sites and Adorama is just being more careful with dates, but it seems like other sites more geared toward audio equip have a little better idea than that. Basically, if you pre-order you won't hear anything until it ships.
Adorama is good site for camera equip, but perhaps doesn't jive with this hobby as well. Just wanted to let folks know in case they're comparing preorders. Definitely glad I cancelled with them in favour of the better deal at MP4Nation. Crossing fingers the 3/29 date for the first batch holds true