True that winter in qatar is still not as people would expect but i don't think the temperature will be that high plus most of the players are professionals i don't think this will bother them much i think the high quality of the stadiums and infrastructure in QATAR will make them forget about it, i still think this will be the best world cup in terms of organization.
Natural gas prices are up by more than 1,000%, and Qatar is the top exporter of LNG. They will be earning hundreds of billions of USD from LNG this year. I am sure that they will spend some of that amount to make life easier for the participants of the world cup. I just hope that some of that money to 7,000 plus laborers, who died during the construction of the world cup stadiums. Anyway, I don't think that weather is going to play a major part in the outcome for this world cup. Most of the teams are now used to the different weather conditions.