I'm heading out to pick up my S5 right now!
Re: WIND, I don't think the sale matters so much in terms of hardware, because (a) in the short-term, Shaw/WIND will still be the better option, and (b) while Robelus and WIND use different frequency bands for 3G, I just realized that they're all using the same AWS frequency bands for LTE.
The S5 I bought is the G900W8 model, which is the exact same model being sold in Canada by WIND/Shaw, Rogers, Bell, TELUS...
So, I think newer devices might be a bit more portable between Canadian carriers in the LTE era... in case Shaw ever manages to out nasty Robelus...