well, they dont like the boards much, so i wouldnt expect them to post info here, but here is something from riot lyte on his twitter:
10hs ago
Working on a small live test of new Champ Select on VN server. Fingers crossed it goes well
21hs ago
All we can do is work our butts off and ask for your patience. We'll be back when we have some news.
It makes it much easier to make features in the future if we pull this off, but it's been a rocky start and there's no excuse for that.
For players asking, "What happened?" tldr: this project was massive and introduced a new backend, matchmaking system and Champ Select.
oh from reddit:
Just a small update from Riot TMX over at the EU Boards
22.01 update:
Hey everyone, just wanted to keep you updated on what's happening on our end.
Our engineers are still working on getting the Dynamic Ranked system fixed so it can be re-enabled for everyone. >We haven’t pinpointed a solution yet, but we have identified some back-end systems that need adjustments in >order to properly handle the high volume of games. Once we have a fix we’re confident in, we’ll be rolling the new >champ select and Dynamic Ranked back out to the game ASAP. We’ll start in one region, and if successful, roll >out to other affected regions. The last thing we want is to return the feature to you, only for it to need to come >down again.
Q: What about Party Rewards? A: We'll be extending the Party Rewards Week to account for Dynamic Ranked and new champ select’s downtime.
We’ll continuously update this post, with another update coming within 24 hours, and another on Monday if > service isn’t restored. Thank you again for being so patient!
ya so on the EU boards riot ymir has a post up for a few days saying it was load issues:
http://boards.euw.leagueoflegends.com/en/c/announcements-en/10wde8H7-20012016-euw-dynamic-queue-system-disabled-further-details?comment=0073