More Caffeine: Tim Horton's Introduces New Larger Drink Size

I certainly don't need anymore caffeine. Last night, I went to my local Tim Horton's and asked for my usual "medium double double with sweetener" and when I received my order, my drink was large sized.

Yesterday, I read about Tim Horton's shifting their drink sizes to accommodate a new, larger size, but I thought this was only happening in Kingston and Sudbury.

Perhaps this was a convenient mistake that coincided perfectly with Tim Hortons' transition, but as a result, I didn't sleep until 5AM this morning.

Apparently the cost of the drinks themselves will stay the same, but the names of the sizes have changed. For example, the cost of the old medium is the same price as the new small size (which is the same size as the old medium, but is now called a small).

What do you think? Should Tim Horton's have just kept their old sizes? Or is this an effective way of competing with Starbucks' new Trenta size?

Photo from The National Post