I happened to see, in Picicci v. 1485528 Ontario Inc., 2014 ONSC 6496 (CanLII), that Justice F.L. Myers ordered that documents be provided to him electronically:
All documents to be delivered to me in this matter should be sent to the court as attachments to emails or on memory keys/sticks. The documents should be in searchable pdf format. Reference to case law, if any, should be by hyperlinks to CanLII or another online source if necessary. If counsel need assistance with format, resort may be had to http://www.ontariocourts.ca/scj/practice/practice-directions/edelivery-scj/
I have not seen such an order made before, but we will probably see it with increasing frequency.
I also had not been aware that there is now a general protocol for e-delivery in the Superior Court. The link to the guide, where the protocol is set out, appears in the quotation above.