I paste here the content of the mail I received last year from the ticket office
Seems to be the same this year. Here is the email I received (this one was from yesterday but a very similar one was from a couple of weeks ago, so seems they always just send a generic response):
Dear Sir or Madam,
As of today, we are unfortunately unable to give you an estimated time of opening. We are currently running technical tests to ensure you the best possible service when ticket sales will open.
However, we can assure you that the website will not be available before 7:00 am (local time). We will do our best to open the website as soon as possible in the morning.
With best regards,
manadrainer - what email address do we send a question to to get this year's info?
I actually sent a mail through the support form on the site, didn't send it directly to an email address.
Can you buy tickets for the semis and finals in the same transaction? Without going over the ticket limit that is.
you can only buy a maximum of 2 tickets per transaction for the mens semis and finals days. (I don't think the women's are so much of an issue.) However, this should mean you can buy one ticket for the semis and one ticket for the finals if you are only buying for yourself. This would come out of your allowance of 4 tickets total for the show courts though, so would limit your show court purchases on other days.
Be sure to be in front of your computer at least 15 minutes before the time they tell you, and refresh your page till you get that window which tells you are in the queue. (hoping that it works like last year)
That is exactly what I am doing right now!! At the moment it is 0648 CET and I am still just getting the holding page.