I noticed it only the other day so I think it is fairly new, at least the Canbet license.
The Queen's club casino has existed for some time since my records show I joined in December 2001. It is now "powered by Canbet" which I presume means licensed by. Seems to make sense since my old login will not work, neither will my Canbet account login but it simply fails and does not scold me for using a bad id and/or password.
The Queen's club casino is powered by Boss Media from Sweden, which also powers casino 365 (Bet365). It seems Canbet has also purchased the Boss Media poker room, which might add to the fairly thinly used room. This room is also used by Sportingbet for their poker room. Hard to keep track of things these days.
This casino software is one of the big 3 and considered to deal a square game. The poker software is newer and still has bugs. They seem not to have put the same effort into getting the poker software solid. BTW the bugs that will affect you involve the rake and not payouts.