The fleet is actually currently...
45x Q400s
10x E175s (1 further due, G-FBJK)
14x E195s
69x aircraft, +1 by next summer... Although I see there's a few Q400s still in the fleet that are now 10 years old so maybe some of these will naturally be leaving the fleet soon?
2 aircraft will return from Brussels Airlines end of March, so only two will be leased out. So that's 68 aircraft that need to be accounted for... I was under the impression it's the E195s being grounded and not the E175s but I have no evidence for this.
It's still possible 1x E195 will go to Aurigny, since they've yet to announce the source of their future fleet addition.
Either way a large portion of the fleet will be grounded come April...