In compare to last year where AMD presented Zen 2 EPYC performance and showed 8c Ryzen CPU w/o heatspreader....this year there was basically no info about Zen 3.
I think the real reason why no Zen3 info this early is that by all accounts, Zen2 is currently selling very well and they don't want to Osborne themselves. Now that the typical sale that would not be done by someone waiting for Zen3 is a Ryzen, they want to talk about them as late as possible.