I've just seen that there's to be a forum update sometime today. I don't know when or if there will be any time when the forum mightn't be accessible.
There's a change regarding the reply with quote feature. The person who you are quoting will get a notification that they've been quoted via the standard 'mention' system.
There's a bigger change affecting the reply with quote feature. Nested quoted replies will no longer be possible. Crowdstack says that's to make things easier for people to read.