Shaw is clearing all Standard Def channels off F2 T13 right now. It should be clear by August.
There is speculation that this will initially be used as a MPEG4 DVB-S2 test channel to do the final testing of the 605/630 + cable head end MPEG4/DVB-S2 decoders.
If the CRTC OKs the takeover of Canwest TV properties by Shaw, expect to see HGTV + Global Toronto & Vancouver on this transponder eventually.
BTW, if anyone has a 921 receiver, now is the time to contact SD. They will swap a 505 at no charge for it. This is because of the uncertainty of Motorola support for 9XX receivers in 2011.