No, there are no direct replacements coming soon.
The issue with shortages is to do with the floods in Thailand and parts needed to manufacture the cameras. Nikon is having the same troubles and the D7000 is experiencing the same issues.
I haven’t heard if any other Canon DSLR is affected.
Floods in Thailand affect production
The floods in Thailand have affected Canon’s manufacturing and have lead to a closure of an ink jet printer factory in the country.
Both Sony and Nikon have faired far worse, Sony has delayed announcements due to the flooding and Nikon has had a major factory closed for 3 weeks.