Someone moved my cheese so I have decided to not like this change. :@
I don't really mind or care about a change to TechEd, but if this means that the separate SharePoint conference will disappear then that would be a great shame. That conference by itself pulls in well over 10K attendees each year with a very large number of in depth SharePoint only tracks as well as exhibitors relevant to just that product.
Combining that with other technologies would be horrible for exhibitors as well as attendees. There are only so many tracks you can schedule at a time.
I am sure many things are still in the planning, so I am keeping my fingers crossed for good news, but based on what is said here I will probably end up disappointed.