Telus doesn't broadcast what their future plans are for their services.
The essentials theme pack is a regulated grouping of channels. Any changes to it would have to get CRTC approval for mandatory distribution first. Both The Weather Network and MétéoMédia are on the list BUT, the CRTC page outlines where each is to be included:
A terrestrialBDUlicensee operating in an anglophone market must distribute The Weather Network to all digital subscribers as part of the digital basic service.
A terrestrialBDUlicensee operating in a francophone market must distribute Météomédia to all digital subscribers as part of the digital basic service.