I thought I'd mention that we're now shipping with these new features:
1. 5-way speaker binding posts (gold-plated screw-down type replaces the plastic spring clip speaker connectors found on earlier versions).
2. Direct subwoofer outputs. This is a full-range output to go directly into a sub input.
The white finish is high-gloss and the new black version is semi-matte black to hide fingerprints and scratches. Both white and black include the same new features, which is something people have been asking about for some reason.
As far as availability of the A5 in the UK, we are now listed on Amazon UK:
I'm surprised you didn't mention how great these speakers work with the Airport Express! This seems to be what a large majority of our customers do and we're working on a sub that also has an AC outlet on the back to allow for a "wireless-ready sub".
Also just FYI, the AC output jack for the UK market is an EU plug - I think I sent you a US version as the EU plugs weren't shipping yet.
Brady Bargenquast, co-founder, Audioengine USA