Don't read anything into it. I've got a couple of corporate results calendars and they can be very inaccurate. https://www.morningstar.com.au/Stocks/CorpCalendar
I actually had RXP down for the 16th of February based purely on last years announcement.
15/02/2016 after market close
18/02/2015 after market close with the remainder released 19/02/2015 pre open.
Keeps the market on its toes I guess if people are wanting to get set prior to results like myself.
I have however been lazy and not contacted the company to see if they would release a date for announcements.
RXP Price at posting:
94.0¢ Sentiment: Buy Disclosure: Held