Canon recently announced a new DSLR, the 30D, to replace the 20D. Apparently Canon marketing has a really special technique to find product names (satire warning). As a result this 30D camera has a name similar to the D30, the first Canon produced DSLR camera, released in 2000. How long before some ebay sellers tries to send a D30 "confusing" it with a 30D.

Off course, the few extra features of the 30D could be found on the 20D with a software upgrade, and there is still no documentation for the RAW files which seems to have changed a bit, once again.