Do you think there will be a teaser today?

[rcw-2543]

They explicitly stated the 85th hero will be on PTR the first week of January.

Heroes of the Storm Content Update - December 21

Greetings, Heroes! I wanted to check in and give everyone an update following our latest announcements. First, the next few months will unfold much like we’d originally planned. In fact, our 85th hero will be announced soon before hitting the PTR the first week of January, and that hero will be followed by a string of cool events and hero reworks en route to our next hero release. What we want to do beyond those releases is currently under discussion across the Heroes of the Storm team. The p…