It has just come out that Degrassi Alum Neil Hope, who played Derek (Wheels) Wheeler through all the Degrassi series passed away 5 years ago and the information is just being made public now.
I grew up watching the original Degrassi series and was always fond of Wheels. The character went through a lot over the course of the show. He dealt with the normal teenage problems as well as the death of his parents, living with his grandparents, getting touched by a man while hitch-hiking, and ends up driving drunk and killing a baby and crippling his friend Lucy.
Degrassi was a huge part of Canadian pop culture and The Zit's will live forever!
Amy and Rory are supposed to be leaving together halfway through the season. Not sure where you got that spoiler from, but I can't see it happening given some of the casting information for future episodes.