What happened to wickedlysmart.com ?

I just tried visiting the wickedlysmart website and got the following message:
" This domain has temporarily been disabled.
To restore the domain, contact your Customer Support. "

Has the website for the headfirst books (specifically HF Design Patterns) changed to an alternate site? Please advise.

Hi,
The website hasn't changed - unfortunately it's down currently! We'll be getting it back up as soon as we can.

Thanks for your patience,

Elisabeth