Based on my knowledge, I know that financial years end on the 31st of December, and the software is listed to work with the 2014 fiscal year. I wouldn't proceed further without asking your financial representatives at the government institutions. They should clarify this situation better. I believe you need the 2015 version of eTaxCanada in order to send the forms.
Contact the developers, because they can provide the relevant information: http://www.etaxcanada.com/contact.aspx