I see what you mean. But the thing is, people are starved for news. At this point, knowing what 10.2.6 is will just feel like a relief for a lot of people. We still won't be any wiser about the future.
In a normal patch cycle, we would see 10.2.7 on the PTR a couple of days after 10.2.6. So if they choose to withhold 10.2.7 info at this time, they will have missed the opportunity to solve the current problem within the community. It'd just feel like they're keeping us in the dark about yet another patch.
So that's why I think they need to do this:
> Explain what 10.2.6 is without spoiling any potential secrets we're meant to find by playing it. Tell us what day is releases.
> While discussing 10.2.6, also explain S4 and how the two tie into one another. For example if they share the theme of "SoD". Give us a rough time frame of its PTR.
> Once those two urgent matters have been dealt with as a quick and nice introduction to the video or blog post, mention that Alpha testing will begin soon. Give us a rough idea of which features will be present for testing initially, and let us know more details will be coming in blog post over the next few weeks (including patch notes).
> Lastly, as the highlight of the news event, Give players an idea of where we'll be heading next with 10.2.7. List a few main features and mention the patch will hit the PTR soonTM after 10.2.6 is live, running side by side with the S4 PTR for a release in a couple of months from now.