The 2 things that came to mind reading the email this morning:
Whether you get out of the pool will depend on if you are currently flying. Also, if they're not going to offer course dates until April/May, it'll mean most in the pool will be extremely close, if not past their one year expiry.
They started the pool in May and stopped interviewing in what, mid-July? If the "successful completion of the selection process" starts when you get the thumbs up email, then the latest poolies run out of time in August?
Not the news I wanted to hear but 'nowt any of us can do about it.