i don't think that they will bring down website just to change some image and update a file into their server
Sometimes posting new content to a page can bring it down. Granted that hasn't happened in years since website refinement has made leaps and bounds. But it could be possible, just being optomistic haha.
The main problem is, every time it happens (which is fairly frequently, they probably just use some of the cheapest hosting known to man) someone creates a thread about it and people go "omg update confirmed soon".
Getting hammer with emails that ask the same question, sky3ds trying to take down gateway website, haters who are trying to take down gateway website, updates or no updates, maintenance or no maintenance.
Speculation mode.
that being said, the website looks different toothat's wierd. only it's index page is down. everything else is up
http://www.gateway-3ds.com/index.html <--- what's currently down now.
http://www.gateway-3ds.com/products.html
http://www.gateway-3ds.com/downloads.html
http://www.gateway-3ds.com/resellers.html
http://www.gateway-3ds.com/contacts.html
up.