I just got notification of cancellation of my flights mentioned upthread. Cancellation email was as follows:

Due to adjustments to our flight schedule, we're sorry to advise you that it has been necessary to change one or more of your WestJet flights and we are unable to provide an alternative flight option.

We are not processing refunds to original form of payment at this time. The full value of your flight will be refunded to a WestJet travel bank, which is valid for 24 months from date of issue. If you prefer a refund to original form of payment, we will provide information at a later date.