Naples yea, both a 16 core 32 thread AND a 32 core 64 thread part, mid 2017 is it's launch window, most likely next month after AMD's conference at the end of this month.
I think the last Opteron was the "Abu Dhabi". It's only claim to fame was that it could handle a lot of RAM, but it was slow compared to Intels of that time.
The Naples will be the next with 32 cores (8-core dies versus 4-core die of Ryzen). I would hope they could also put out an 8-core (1 die) model with
AMD already announced the models and speeds of "Threadripper" server chips releasing Summer 2017
|1998X||16/32||3,5/3,9GHz||155W||Quad Channel DDR4||44|
|1998||16/32||3,2/3,6GHz||155W||Quad Channel DDR4||44|
|1977X||14/28||3,5/4,0GHz||155W||Quad Channel DDR4||44|
|1977||14/28||3,2/3,7GHz||140W||Quad Channel DDR4||44|
|1976X||12/24||3,6/4,1GHz||125W||Quad Channel DDR4||44|
|1956X||12/24||3,2/3,8GHz||125W||Quad Channel DDR4||44|
|1956||12/24||3,0/3,7GHz||125W||Quad Channel DDR4||44|
|1955X||10/20||3,6/4,0GHz||125W||Quad Channel DDR4||44|
|1955||10/20||3,1/3,7GHz||125W||Quad Channel DDR4||44|
Those aren't server chips, they're HEDT, High end desktop chips. Which can also be used as workstation chips. They haven't shown the stack yet as far as I know for the EPYC server grade chips.
The only difference between Threadripper and Naples is that Threadripper is a single socket only platform SP3r2 and Naples is dual (to quad, presumably) Socket SP3, both are the same pin compatible LGA 4094, Socket SP3r2 will fit both Threadripper and Naples chips, making them single socket servers. Also, the definition of "server" has changed, it's an all encompassing term for anything from an actual server to HPCs, AMD just for some reason felt the need to split the term "server" into HEDT and EPYC terms, presumably because they are launching upwards of 20 processor models and needed a way to separate them.