My friend claims this code is valid until December 6th, but he couldn't tell me where he got this information.
Perhaps someone can verify this?

The oldest mention (from 23 nov) of the code I've found was on Polish website lowcygier.pl, where 20 Jan is mentioned explicitly, and several times.

So tomorrow is Cyber Monday then a Winter Sale that maybe starts on the 15th or 16th ?

I confirm. I found this page.

13 days until the Winter Sale ?

Not likely. All the current sales end on or before December 11th. So I expect the Winter Sale to start on the 11th.

This is further corroborated by the fact that last year's sale began on the 12th, and that most major sales this year have begun exactly one day before the beginning of the same sale last year.

Seems like a good bet. And I think that it would be good. Nice distance to Christmas, time to thoroughly look over the sale and to plan all purchases.

Thanks chief. Saved the forum from an extra thread. I was just about ask when the last winter sale took place.

:)

Can you combine this discount code with the one in newsletter deals ?

So, the speculation is the GOG Winter/Christmas sale will start this coming Friday and run for a week to avoid overlapping Steam's expected sale start date of the 21st. Alright. It would sure be nice if, to compensate for such an early start and short duration, the Winter/Christmas sale would surprise us with one or more major new releases. Including, but not limited to, the likes of more Far Crys, Atomic Heart, and any Need For Speeds. I have GOG wallet credit to burn and so will buy at full price should something of interest comes along.

Major sales have a duration of three weeks. Thursday 11 is most probably because you have two days to fix issues.

I'm sorry, but I have no idea. I guess you can simply try to use it.
If "promo code" field is available at checkout - just use the code and I guess it'd work.

You may be right. All promos end in 3d 15h, which makes this date the most likely.

It will probably start on Thursday, December 11th, at 2pm UTC/3pm CET and run till start of January (may be Jan 1st, 2nd or 5th). GOG usualy starts before Steam to get some early sale, but they never finished Winter Sale after only one week.

We will have a happy day 1 maybe :)
And another one in the middle as well.

Are there rumours of a new game tomorrow?