There are still flash deals cycling on the main page every 48 hours. Is that a permanent thing now? Or until Christmas?

BTW, X-Morph: Defense is now on record sale (85%) in a flash deal. Definitely grab that one if you like tower defense.

I hope it keeps this way forever. It's a nice way to convince friends to buy here.

Yes, they said in the newsletter that there will be three cycles a week.

Thanks, I missed that one. It doesn't specify any end date, so hopefully it stays.

EDIT:
And they're gone xD.

In a half an hour there will be a new Flash Deal, I found it entertaining and a reason to check the main page. It brings focus to the promoted game and it demands that promotion better be good. I wish that Flash Deals would run the whole year, and every 48hrs one, two or three, videogames would be available on it. With good or very good deals it could be a win-win situation for the developer-publishers-distributor-client chain. And these deals are not flashing so it's safe. Newer games tend to have lower offs.

November Flash deals were
Dorf Romantik -20% and Vampire: The Masquerade - Coteries of New York -65%
Gordian Quest -30%
Valfaris -65% and Parkitect -30%
Rebel Galaxy Outlaw -75% and Shadows: Awakening -70%
Fury Unleashed -65% and Vampire: The Masquerade - Shadows of New York -50%
Absolver -85% and X-Morph: Defense Complete Edition -85%
We Happy Few -90%
Urtuk: The Desolation -38%
Hyper Light Drifter -65%

and Today`s one is... (please continue thread if you think fun deals are worth it)
or maybe up it here with your vote https://www.gog.com/wishlist/site/flash_deals_every_48hrs_whole_year

Can't say that all those -20%/-30%/-50% deals are good, especially on a high base price, even -65% ain't when it's on overpriced crappy games.
80/90% off deals are solidly attractive though, you might well end up picking something you wouldn't care to look at normally and find out it's pretty good (and even if it ain't wouldn't feel bitter because it was cheap).